Q1.The 'Panchratna' was written during the

1. Later Vedic period
2. Sultanate period
3. Maurya period
4. Gupta period

Correct Ans: D

Q2.Green Mufler is

1. a method of afforestation
2. plantation along roadside to reduce noise pollution
3. a process of reducing vibration
4. a technology for reducing air pollution

Correct Ans: B

Q3.The first all women employees post office of of Indian opened at which of the following places ?

1. New Delhi
2. Rajkot
3. Chennai
4. Mysore

Correct Ans: A

Q4.Which of the following Temple's main two doors know as known as 'Swargadwar' and 'Mokshadwar' ?

1. Ranchod Rai - Dakore Temple
2. Dwarikadhish - Dwarka Temple
3. Somnath Temple
4. Shamlaji Temple

Correct Ans: B

Q5.Zaverilal Mehta is known for

1. Photography
2. Journalism
3. Photojornalism
4. Painting

Correct Ans: C

Q6.Which one is the biggest Powerhouse in Gujarat ?

1. Dhuvaran
2. Gandhinagar
3. Sabarmati
4. Ukai

Correct Ans: D

Q7.Dhamal Dance' belongs to which community ?

1. padhar
2. Sidi
3. Mer
4. Rabari

Correct Ans: B

Q8.Which one of the following institution is not situated in Ahmedabad ?

1. ATIRA
2. PRL
3. IPR
4. ISRO

Correct Ans: C

Q9.The Constitution of India came into force with effect from -

1. August 15, 1947
2. August 09, 1948
3. January 26, 1950
4. January 26, 1949

Correct Ans: C

Q10.In Hindu mythology, who among the following is considered to be physician of Gods ?

1. Charak
2. Dhanwantri
3. patanjali
4. Chayawan

Correct Ans: B

Q11.The following sentence is divided into four parts. One part has error.

Which is that part ?

It do not take (A) / much effort to declare (B) / how proud one is (C) / to be an indian (D)

1. A
2. B
3. C
4. D

Correct Ans: A

Q12.The following sentence is divided into four parts. One part has error.

Which is that part ?

As a nation (A) / we just didn't knew (B) / how to value (C) / our cultural treasures.

1. A
2. B
3. C
4. D

Correct Ans: B

Q13.Find out the alternative which is the most similar in meaning to the word give in capital.

HONESTY

1. integrity
2. proficiency
3. impetuousity
4. rarity

Correct Ans: A

Q14.Which is the most opposite in meaning of the word given in capital ?

SURPLUS

1. excess
2. deficit
3. indigent
4. exclude

Correct Ans: A

Q15.Which is the most opposite in meaning of the word given in capital ?

FRATERNITY

1. hostility
2. brotherhood
3. proclivity
4. enmity

Correct Ans: B

Q16.Fill in the blanks with most appropriate word.
India's nuclear program has come __________ age.

1. For
2. Through
3. With
4. To

Correct Ans: D

Q17.Fill in the blanks with most appropriate word.

For the last few years, I have become ________ at handling my emotions.

1. Subjective
2. Appreciative
3. Possessive
4. Adept

Correct Ans: D

Q18.Choose the word which is synonym of the word give in capital letters.

EVOKE

1. Develop
2. Show
3. Call forth
4. Remove

Correct Ans: C

Q19.Choose the word which is synonym of the word give in capital letters.

CONCLAVE

1. Private meeting
2. Seminar
3. Procession
4. Party

Correct Ans: B

Q20.Choose the word which is antonym of the word give in capital letters.

HOSTILE

1. Sparse
2. Friendly
3. Chaos
4. Doubtful

Correct Ans: B

Q21.Choose the word which is antonym of the word give in capital letters.

UNCOUTH

1. Awkward
2. Unfamiliar
3. Courteous
4. Crude

Correct Ans: C

Q22.The first and the sixth sentences are numbered 1 and 6. The \(2^{nd}\), \(3^{rd}\), \(4^{th}\), and \(5^{th}\) sentences are not in proper sequence and are numbered P, Q, R, and S. Select the correct sequence from the give options.

1. Newton had a little dog named Diamonnd

P. A heap of written papers containing the labour of twenty years lay on the the table.

Q. In the absence of Newton little Diamond rose up, jumped on the table and knocked down the candle.

R. One day he was working on some problems, after a while he went out of his room.

S. The little dog was asleep in the room near the fire.

6. The papers immediately caught fire and were burnt to ashes.

1. RSQP
2. PQRS
3. POST
4. RSPQ

Correct Ans: D

Q23.The first and the sixth sentences are numbered 1 and 6. The \(2^{nd}\), \(3^{rd}\), \(4^{th}\), and \(5^{th}\) sentences are not in proper sequence and are numbered P, Q, R, and S. Select the correct sequence from the give options.

1. The Ganga a holy river to the Hindus.

P. Every Hindu wishes to die on the bank of the holy Ganga.

Q. It comes from Gangotri mountains in the Himalays.

R. It is one of the biggest rivers in India.

S. The Hindus call the Ganga, mother Ganga.

6. At Haridwar, it leaves the mountains and enters the plains.

1. RPQS
2. QSRP
3. SPRQ
4. PQRS

Correct Ans: C

Q24.Which of the following words has wrong spelling ?

1. Fense
2. Faint
3. Famous
4. Fabulous

Correct Ans: A

Q25.Which of the following words has wrong spelling ?

1. Privilege
2. Village
3. Distingush
4. Distinction

Correct Ans: C

Q26.In tap changing transformers, the tappings are provided on

1. secondary winding
2. primary winding
3. tertiary winding.
4. high voltage winding.

Correct Ans: D

Q27.Shunt capacitors in substation

1. Consume lagging VAR
2. Deliver lagging VAR
3. Consume active power
4. Deliver active power

Correct Ans: B

Q28.A Wattmeter is reading backwards in an experiment. Upscale reading can be obtained by reversing

1. Pressure coil connection only
2. Current coil connection only
3. Both pressure and current coil connection only
4. Either pressure or current coil connection

Correct Ans: D

Q29.In Kelvin double bridge, two sets of readings are taken when measuring a low resistance, one with the current in one direction and the other with direction of current reversed. This is done to eliminate the effect of

1. Contact resistance
2. Resistance of leads
3. Changes in battery voltage
4. Thermo- electric emfs

Correct Ans: D

Q30.The use of________ instruments is merely confined within Laboratories as standardizing instrument:

1. Absolute
2. Indicating
3. Recording
4. Integrating

Correct Ans: A

Q31.A thermistor exhibits

1. Only a negative change of resistance with increase in temperature
2. Only a positive change of resistance with increase in temperature
3. Can exhibit space either a negative or positive change of resistance with increased temperature depending upon the type of material
4. None of these

Correct Ans: A

Q32.The pressure coil of a wattmeter should be connected on the supply side of the current coil when

1. Load impedance is high
2. Load impedance is low
3. Supply voltage is low
4. None of the above

Correct Ans: A

Q33.Hysteresis in an instruments means

1. Repeatability of the instrument
2. Reliability of the instrument
3. Change in same reading when input is first increased and then decreased
4. The accuracy due to change in temperature

Correct Ans: C

Q34.1k\(\Omega\), 1W resistor can safely pass a current of

1. 30 mA
2. 100 mA
3. 150 mA
4. 500 mA

Correct Ans: A

Q35.Reactive power consumption in transformer at full load and rated voltage is approximately_____% of its rated power.

1. 1 to 2
2. 20 to 28
3. 7 to 9
4. 42 to 52

Correct Ans: C

Q36.The advantages of non conventional energy sources over conventional energy sources are

1. Clean
2. Renewable
3. Cheap once installed
4. All of the above

Correct Ans: D

Q37.The function of MPPT in solar photovoltaic system is

1. To track maximum power point at different solar radiation
2. To keep output constant at a different solar irradiation
3. To reduce impedance
4. None of the above

Correct Ans: A

Q38.Where is biggest solar park in Gujarat ?

1. Khavda
2. Charanka
3. Dasada
4. Mehsana

Correct Ans: B

Q39.The range of wind speed for wind mill generate power is _________ m/s.

1. 5 to 15
2. 0 to 25
3. 10 to 50
4. 15 to 30

Correct Ans: A

Q40.Output of single photovoltaics cell is

1. 6 V
2. 3 to 5 V
3. 12 V
4. Less than 1 V

Correct Ans: D

Q41.Making capacity of the circuit breaker depends on

1. Operating voltage
2. Short circuit MVA
3. Fault current
4. All of the above

Correct Ans: D

Q42.Lightning arresters are used for the protection against

1. Overcurrent
2. Inter turn
3. Reverse power
4. Over voltage

Correct Ans: D

Q43.The errors in the current transformer are mainly due to

1. Leakage flux
2. Core losses
3. Copper losses
4. Excitation EMF required

Correct Ans: B

Q44.Number of insulator disc, each rated 11KV, required in a suspension type insulator string of 66KV line is _____ .

1. 6
2. More than 6
3. 12
4. Less than 6

Correct Ans: D

Q45.The electric breakdown strength of insulating materials depends on

1. Nature of applied voltage
2. Imperfection of dielectric material
3. Pressure, temperature and humidity
4. All of the above

Correct Ans: D

Q46.Which is a non conventional source of energy?

1. Fossil fuels
2. Radioactive substances
3. Geothermal, ocean tides and waves
4. Water

Correct Ans: C

Q47.Earth wire on EHV overhead transmission line is provided to protect the line against

1. Lightning surge
2. Switching surge
3. Excessive fault voltages
4. Corona effect

Correct Ans: A

Q48.For transmission line, which one of the following relation is true?

1. AD -BC = 1
2. -AD - BC = 1
3. AD - BC = 0
4. AD - BC =3

Correct Ans: A

Q49.The inductance of a transmission line is minimum when

1. GMD is high
2. GMR is high
3. Both GMD and GMR are high
4. GMD is low and GMR is high

Correct Ans: D

Q50.For a 500 Hz frequency Excitation, a 50 km long power line will be modelled as

1. Short line
2. Medium line
3. Long line
4. Data insufficient for decision

Correct Ans: C

Q51.HVDC transmission is preferred to EHV AC because

1. HVDC terminal equipment are inexpensive
2. VAR compensation is not required in HVDC system
3. System stability can be improved
4. Harmonic problem is avoided

Correct Ans: C

Q52.The most appropriate operating speeds in rpm of generators used in thermals, nuclear and hydro power plants would be respectively______________.

1. 3000, 3000 and 300
2. 1500, 1500 and 3000
3. 3000, 300 and 1500
4. 300, 1500 and 300

Correct Ans: A

Q53.If X is the system reactance and R its resistance, the power transferred is maximum when

1. \(X=R\)
2. \(X=\sqrt R\)
3. \(X=\sqrt 3\) R
4. \(X=2R \)

Correct Ans: C

Q54.For Y-Delta transformer with Y-side grounded, the zero sequence current

1. Exists in the line on Y-side
2. Exists in the line on Delta side
3. Exists in the line on both Y and delta sides
4. Has no path to ground

Correct Ans: A

Q55.A three phase 33 KV, oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is

1. 1200 A
2. 3600 A
3. 35 KA
4. 104.8 KA

Correct Ans: C

Q56.A single phase transmission line of Impedance j0.8 Ω supplies a resistive load of 500 A at 300 V. The sending power factor is

1. Unity
2. 0.8 lagging
3. 0.8 leading
4. 0.6 lagging

Correct Ans: D

Q57.The power generated by two plants are: \(P_1=50 MW, P_2 = 40 MW\). If the loss coefficients are \(B_{11}=0.001, B_{22}=0.0025, B_{12}=-0.0005\), then the power loss will be

1. 5.5 MW
2. 6.5 MW
3. 4.5 MW
4. 8.5 MW

Correct Ans: C

Q58.Which of the following is a series FACTS device?

1. TCSC
2. SVC
3. STATCOM
4. None of these

Correct Ans: A

Q59.An electric bulb rated 100 Watt, 240 V is connected to a 180 V supply. What will be the output of the bulb?

1. Approx 76 Watt
2. Approx 46 Watt
3. Approx 56 Watt
4. Approx 100 Watt

Correct Ans: C

Q60.ABCD parameters of two port networks relate the following:

1. \(V_1, V_2\:with\:I_1, I_2\)
2. \(V_1, I_1\:with\:V_2, I_2\)
3. \(V_2, I_1\:with\:V_1, I_2\)
4. None of the above

Correct Ans: B

Q61.The function of shunt reactor is

1. To control the study state over voltage when line is lightly loaded
2. To improve the transfer capability of the line
3. To limit short circuit current
4. None of these

Correct Ans: A

Q62.For a 5 Hz frequency excitation, a 400 Km long power line will be modelled as

1. Long line
2. Short line
3. Medium Line
4. Data insufficient for decision

Correct Ans: B

Q63.In AC transmission line system there is difference in phase voltage at the two ends of line due to

1. Earthing of line
2. System voltage
3. Insulators
4. Reactance of line

Correct Ans: D

Q64.Chandrapur-Padghe HVDC Line is operated by

1. MSEB
2. PGVCL
3. PGCIL
4. Govt. of India

Correct Ans: A

Q65.Nationwide synchronous power grid, interconnecting all the five regional grids, has been established in

1. 2013
2. 2014
3. 2015
4. 2012

Correct Ans: A

Q66.Which of the following forms of energy has a long term (next 50 years) estimated availability?

1. Low temperature heating from solar energy
2. Synthetic oil and alcohols from coal
3. Photovoltaic production of electricity
4. Coal

Correct Ans: B

Q67.Of the following choices, which best describes or defines BIOMASS?

1. Massive living things
2. Inorganic matter that can be converted to fuel
3. Organic matter that can be converted to fuel
4. Petroleum

Correct Ans: C

Q68.Of the following choices, which best describes or defines geothermal energy ?

1. Heat energy from volcanic eruptions
2. Heat energy from hot Springs
3. Heat energy from inside the earth
4. Heat energy from rocks on earth’s surface

Correct Ans: C

Q69.A group of solar collectors connected together is called a

1. Solar cell
2. Solar array
3. Solar center
4. Solar concentrator

Correct Ans: B

Q70.The main disadvantage of wind power is that

1. It is available only in coastal area
2. Wind energy systems are noisy when in operation
3. Large land area is required
4. The capacity utilization is less

Correct Ans: B

Q71.Wind energy conversion devices based on drag force

1. Move faster than wind
2. Move slower than wind
3. Move with equal velocity as wind
4. Do not depend on the velocity of wind

Correct Ans: B

Q72.The power transmission capability of bipolar lines is approximately

1. Half that of three phase single circuit line
2. The same as that of three phase single circuit line
3. Twice that of three phase single circuit line
4. Thrice that of three phase single circuit line

Correct Ans: B

Q73.The low power factor of an industrial plant is an uneconomical for

1. Electric Supply utility only
2. Owner of the plant only
3. Both the owner of the plant and Electric Supply utility
4. Either A or B

Correct Ans: C

Q74.A thermal generating station has an installed capacity of 15 MW and supplies a load of 10 MW for 12 hours and 5 MW for remaining 12 hours. The plant capacity factor for this station is

1. 0.5
2. 0.75
3. 0.67
4. 1

Correct Ans: A

Q75.In Merz-Price percentage differential protection of a Δ - Y transformer, the CT secondaries connection in the primary and secondary windings of the transformer would be in the form

1. \(\Delta - Y\)
2. \(Y - \Delta\)
3. \(\Delta - \Delta\)
4. \(Y - Y\)

Correct Ans: B

Q76.The components used in the output circuit of static relay is

1. OP-AMP
2. Comparator
3. Capacitor
4. Thyristor

Correct Ans: B

Q77.Series reactors are used to

1. improve transmission efficiency
2. improve the power factor of the system
3. improve voltage regulation
4. to bring down the fault level

Correct Ans: D

Q78.Which of the following is may be the rating of distribution transformer?

1. 50 MVA
2. 100 MVA
3. 100 KVA
4. 500 MVA

Correct Ans: C

Q79.In distribution transformer efficiency is measured on the basis of

1. Energy
2. Power
3. Current
4. Voltage

Correct Ans: A

Q80.Which is a relay characteristic has closest resemblance to the characteristic of fuse/MCCB?

1. Normal inverse characteristics
2. Very inverse characteristics
3. Extremely inverse characteristics
4. All of the above

Correct Ans: C

Q81.The shape of disc in induction Disc type overcurrent relay is

1. Circular
2. Rectangular
3. Spiral
4. Elliptical

Correct Ans: C

Q82.In static relay overcurrent characteristics is reached using:

1. Differentiator
2. Comparator
3. Integrator
4. RC circuit

Correct Ans: C

Q83.For limiting short circuit current______ is used.

1. Resistors
2. Capacitors
3. Reactors
4. Semiconductor devices

Correct Ans: C

Q84.The voltage regulator having dead zero effect is

1. Magnetic amplifier
2. Electronic
3. Electromagnetic
4. None of the above

Correct Ans: C

Q85.Static voltage regulators are

1. transistors
2. integrated circuits
3. microprocessors
4. all of this

Correct Ans: D

Q86.The computer's processor consists which of the following part ?

1. CPU and main memory
2. Hard disc and Floppy disc
3. Main memory and storage
4. Operating system and applications

Correct Ans: D

Q87.Which one of the following errors in the program of the computer causes wrong results ?

1. Byte
2. Attributes
3. Bug
4. Input problem

Correct Ans: C

Q88.Which process checks to ensure the components of the computer are operating and connected properly ?

1. Editing
2. Processing
3. Booting
4. Bugging

Correct Ans: C

Q89.Which one of the following devices is not used as a locator in graphic applications ?

1. Graphic tablet
2. Touch panel
3. Mouse
4. Light pen

Correct Ans: D

Q90.Which one of the following is the most common pathway to spread malwares ?

1. Pendrives
2. Floppy Diskette
3. Removable Devices
4. E-mail

Correct Ans: D

Q91.Which one of the following electro-magnetic radiation is used by satellite phone for the communication ?

1. Radiowaves
2. X-rays
3. Gamm-rays
4. Microwaves

Correct Ans: A

Q92.The full form of EEPROM -

1. Erasable Electrically Programmable Read Only Memory
2. Electrically Erasable Programmable Read Only Memory
3. Emergency Erasable Programmable Read Only Memory
4. Emergency Electrically Programmable Read Only Memory

Correct Ans: B

Q93.The full form of ISDN -

1. Internet service Digital Network
2. Integrated Solution Digital Network
3. Integrated Service Digital Network
4. Integrated Service Divide Network

Correct Ans: C

Q94.The full form of SMTP -

1. Short Mail Transfer Protocol
2. Simple Mail Transfer Protocol
3. Service Mail Transfer Protocol
4. Second Mail Transfer Protocol

Correct Ans: B

Q95.The full form of ISP -

1. Information Service Provider
2. Internet Service Provider
3. Internet Salute Provider
4. Internal Service Provider

Correct Ans: B

Q96.Which one among the following is the fastest Indian supercomputer developed by ISRO ?

1. Akash -A1
2. Saga-220
3. jaquar-Cray
4. Tianhe-1A

Correct Ans: B

Q97.Which one of the following person has produced the first portable computer ?

1. Ramsay Adobe
2. Bharat Dham
3. Daniel Ritchie
4. Adam Osborne

Correct Ans: D

Q98.Consider the following statements:

(1) MATLAB is a numerical computing programming language.
(2) MATLAB is a fourth generation programming language.

Which of the statements give above is/are correct ?

1. Only (1)
2. Only (2)
3. Both (1) and (2)
4. Neither (1) or (2)

Correct Ans: C

Q99.Which one of the following computer languages is used for displaying web page and other information that can be displayed in a web browser ?

1. HTTL
2. HTML
3. XTTL
4. CMXL

Correct Ans: B

Q100.Consider the following statements:
(1) Embedded computer system boot immediately.
(2) In embedded computer system, the loading is pre-computed and stored on the ROM when the device is made.
Which of the statements give above is/are correct?

1. Only (1)
2. Only (2)
3. Both (1) and (2)
4. Neither (1) or (2)

Correct Ans: A

Q1.The p.u. imdedance value of an alternator corresponding to base values of 13.2 KV and 30 MVA is 0.2 p.u. The p.u. value for the base 13.8 KV and 50 MVA will be_________.

1. 0.306 p.u.
2. 0.33 p.u.
3. 0.318 p.u.
4. 0.328 p.u.

Correct Ans: A

Q2.Which equipment is not given Star labeling by Bureau of Energy Efficiency ?

1. Frost free refrigerator.
2. Office Buildings.
3. Pump Sets.
4. Computers.

Correct Ans: B

Q3.What will happen if the transformers working in parallel are not connected with regard to polarity ?

1. Incorrect polarity will result in a dead short circuit.
2. Transformers will be overheated.
3. The power factors of the two transformers will be different from the power factor of the common load.
4. The transformers will not share the load in proportion to their kVA ratings.

Correct Ans: A

Q4.The main disadvantage of time graded scheme used in over current protection of a radial feeder is

1. The fault at the far end of the feeder is cleared in maximum time.
2. the fault near the generator is cleared in maximum time.
3. The fault near the generator is cleared instantaneously.
4. The fault near the generator is cleared in 0.01 sec.

Correct Ans: B

Q5.With the increase in the load power factor, the efficiency of the transmission line

1. Decreases.
2. Remains unchanged.
3. Increases.
4. Exhibits a maximum.

Correct Ans: C

Q6.Major share of power in India is produced through

1. Thermal power plants
2. Diesel power plants
3. Nuslear power plans.
4. Hydroelectric power plants.

Correct Ans: A

Q7.The device where all the information in your computer is stored is a

1. Modem.
2. Disk drive
3. Monitor
4. Scanner

Correct Ans: B

Q8.HRC fuses provide best protection against

1. Short circuits
2. Lightening
3. Sparking
4. Fire

Correct Ans: A

Q9.Which of the following properties is not desirable in the material of the transformer core

1. Mechanical strength.
2. Low hysteresis loss.
3. High thermal conductivity.
4. High permeability.

Correct Ans: C

Q10.A symmetrical fault occurs on a power system. The percentage reactance of the system on 2500 base kVA is 25%. If the full load current corresponding to base kVA is 20 A, then the short circuit current is

1. 80 A
2. 40 A
3. 160 A
4. 20 A

Correct Ans: A

Q11.The resolution of an indicating instrument is

1. The smallest change in the output reading due to drifting of the pointer.
2. The smallest change in the applied stimulus that will indicate a detectable change in the deflection.
3. The difference between various readings for the same applied stimulus.
4. The difference between the first two readings for different applied stimulus.

Correct Ans: B

Q12.The power which must be available under emergency condition is known as ….

1. spinning reserve
2. firm reserve
3. cold reserve
4. hot reserve

Correct Ans: B

Q13.The full load copper loss of a transformér is 1600 W. The copper loss at half load will be

1. 6400 W
2. 1600 W
3. 800 W
4. 400 W

Correct Ans: D

Q14.If the height of transmission towers is increased, which of the following parameters is likely to change ?

1. Resistance.
2. Capacitance.
3. Inductance.
4. Impedance.

Correct Ans: B

Q15.The most severe fault on the power system is

1. Single line to ground fault.
2. Line to line fault.
3. Three phase short circuit.
4. Double line to ground fault.

Correct Ans: C

Q16.An over current relay having a current setting of 125% is connected to a supply circuit through a current transformer of ratio 400/5. The pick up value is

1. 6.25 A
2. 15 A
3. 10A
4. 12.5 A

Correct Ans: A

Q17.Which of the following is true regarding construction of a reactor?

1. Reactor coils are wound for low inductance and high resistance.
2. Reactor coils are wound for high inductance and low resistance.
3. Reactor coils are wound for minimum inductance and minimum resistance.
4. Reactor coils are wound for maximum inductance and maximum resistance.

Correct Ans: B

Q18.The maximum efficiency of a distribution transformer is

1. at no load
2. at 50% full load
3. at 80% full load
4. at full load

Correct Ans: B

Q19.To The use of reactors permits installation of circuit breakers of

1. Same rating
2. Lower rating
3. Any rating
4. Higher rating

Correct Ans: B

Q20.Creeping in a single phase induction type energy meter may be due to

1. Vibrations.
2. Stray magnetic fields.
3. Overcompensation for friction
4. Excessive voltage across the potential coil.

Correct Ans: C

Q21.If the inductance and capacitance of a system are 1.0 H and 0.01 µF and the instantaneous value of the interrupted current is 10 amps, the voltage across the breaker contacts will be

1. 100 kV
2. 157 kV
3. 50 kV
4. 123 kV

Correct Ans: A

Q22.In Merz-Price percentage differential protection of a Δ - Y transformer, the CT secondaries connection in the primary and secondary windings of the transformer would be in the form

1. \(\Delta - Y\)
2. \(Y - \Delta\)
3. \(\Delta - \Delta\)
4. \(Y - Y\)

Correct Ans: B

Q23.In A.C.S.R. conductor, the function of steel is to

1. Provide additional mechanical strength.
2. Take care of surges.
3. Prevent corona.
4. Reduce inductance and subsequently improve the power factor.

Correct Ans: A

Q24.When a 440/220 V transformer is connected to a 400 V d.c. Supply,

1. The output will be 220V.
2. The output will be 0 V
3. The output will be less than 220V.
4. The transformer may burn

Correct Ans: D

Q25.Bundled conductors are mainly used in high voltage overhead transmission lines to

1. Reduce transmission losses
2. Increase mechanical strength of the line
3. Reduce Corona
4. Reduce Sag

Correct Ans: C

Q26.Which of the following protection is normally not provided on small distribution transformers?

1. Overfluxing protection
2. Directional protection
3. Over current protection
4. Buchholz relay

Correct Ans: D

Q27.The short circuit kVA is maximum when the fault occurs

1. Near the generator.
2. In between the middle and the end of the transmission line.
3. At the end of the transmission line.
4. At the middle of the transmission line.

Correct Ans: A

Q28.Which of the following over current relays has the highest sensitivity ?

1. IDMT over current relay.
2. Very inverse time over current relay.
3. inverse time over current relay.
4. Extremely inverse time over current relay.

Correct Ans: D

Q29.In an interconnected grid system, the more efficient plants are used as

1. Base load plants
2. Reserve plants
3. Peak load plants
4. Both base and peak load plants

Correct Ans: A

Q30.To increase the capacity of a transmission line for transmitting power, which of the following must be decreased?

1. Capacitance
2. Line inductance
3. Voltage
4. All of the above

Correct Ans: B

Q31.Two voltmeters of the same range, one M.I. type and the other M.C. type are connected in parallel for measuring a.c. supply voltage. If the reading of the M.I. type is 300 V, the reading of the M.C. type will be

1. Higher than M.I. type.
2. Same as the M.I. type.
3. Lower than M.I. type.
4. Zero.

Correct Ans: C

Q32.Which of the following acts as a protection against high voltage surges due to lightning and switching ?

1. Horn gaps.
2. Breather.
3. Thermal overload relays.
4. Conservator.

Correct Ans: A

Q33.Which Electricity act is at present prevailing in India ?

1. The Electricity Act, 2005.
2. The Indian Electricity Act, 1910.
3. The Electricity Act, 2003.
4. The National Electricity Act, 2003.

Correct Ans: C

Q34.In Newton Raphson method, the convergence is not affected by the choice of

1. Load bus
2. Slack bus
3. Generator bus
4. Infinite bus

Correct Ans: B

Q35.If the actual clearing angle is greater than the critical clearing angle. The system is

1. Marginally stable
2. Stable
3. Unstable
4. Conditionally stable

Correct Ans: C

Q36.Which of the following is the most likely source of harmonics in a transformer ?

1. Poor insulation
2. Loose connections
3. Overload
4. Core saturation

Correct Ans: D

Q37.For stability reasons we operate the transmission line with power angle in the range

1. \(10^{\circ}- \: 25^{\circ}\)
2. \(30^{\circ}- \: 45^{\circ}\)
3. \(60^{\circ}- \: 75^{\circ}\)
4. \(65^{\circ}- \: 80^{\circ}\)

Correct Ans: B

Q38.Find out the answer which is false.

Greater diversity factor is a desirable feature for a power system because

1. It results in lower maximum demand.
2. Capital investment on the plant is reduced.
3. lower plant capacity is required.
4. It results in more cost of generation of power.

Correct Ans: D

Q39.Which Electricity Regulatory Commission determines the tariff for generation, transmission and wheeling of electricity within the state.

1. State Electricity Regulatory Commission.
2. Central Electricity Regulatory Commission.
3. National Electricity Regulatory Commission.
4. Regional Electricity Regulatory Commission.

Correct Ans: A

Q40.In a 3 phase, 4 wire unbalanced system, the current in the neutral wire is 18 A. The magnitude of the zero sequence current is

1. 18 A
2. 9A
3. 6A
4. 3A

Correct Ans: C

Q41.Power system stability is least affected by

1. input torque
2. losses
3. reactance of generator
4. reactance of transmission line

Correct Ans: B

Q42.The smaller the lagging reactive power drawn by the circuit,

1. The higher is the power factor.
2. The smaller is the power factor.
3. There is no change in the power factor.
4. The higher is the active power.

Correct Ans: A

Q43.The adjacent protective zones in a power system are made to overlap to avoid

1. Transient spots in the system
2. Dark spots in the system
3. Sensitive spots in the system
4. Blind spots in the system

Correct Ans: D

Q44.In case of loss of field excitation in a generator, while the mechanical input remains intact, the generator runs as a/an

1. Induction motor.
2. D.C. motor.
3. Synchronous motor.
4. induction generator.

Correct Ans: D

Q45.The fact that a conductor carries more current on the surface as compared to core, is known as:

1. Permeability
2. unsymmetrical fault
3. skin effect
4. corona

Correct Ans: C

Q46.Capacitive Voltage Transformer (CVT) is used to

1. Reduce losses in a transmission line.
2. Reduce the incidence of overvoltage surges on transmission lines.
3. Improve the power factor of transmission.
4. Connect instruments on the LT side

Correct Ans: D

Q47.The maximum demand of a consumer is 2 kW and his daily energy consumption is 20 units. Its load factor is

1. 50%
2. 41.60%
3. 35%
4. 60%

Correct Ans: B

Q48.If the steady state stability limit of a system is 80 MW and the torque angle is \(30^{\circ}\), the electrical power output of the system is

1. 42 MW
2. 41 MW
3. 80 MW
4. 40 MW

Correct Ans: D

Q49.The principle of current chopping wherein, the current is interrupted much before the natural current zero is most likely to occur in

1. An oil circuit breaker.
2. A vacuum circuit breaker.
3. A \(SF_6\) circuit breaker.
4. An air blast circuit breaker.

Correct Ans: B

Q50.A line trap in carrier current relaying tuned to carrier frequency presents

1. Low impedance to both carrier and power frequency
2. High impedance to carrier frequency and low impedance to power frequency
3. High impedance to both carrier frequency and power frequency
4. Low impedance to carrier frequency and high impedance to power frequency

Correct Ans: B

Q51.In order to improve the power factor in case of 3-phase loads, the capacitors are connected in

1. Star.
2. Delta
3. Star or Delta
4. series

Correct Ans: B

Q52.Load frequency control is achieved by properly matching the individual machine's

1. Reactive powers
2. Generated voltages
3. Turbine inputs
4. Turbine and generator ratings

Correct Ans: C

Q53.If the normal system frequency is 50 Hz and if it is operating at 53 Hz, the equipment most adversely affected is

1. Power transformer.
2. Alternator.
3. Turbine.
4. Circuit breaker.

Correct Ans: C

Q54.In order to improve the voltage profile of the line, compensation is resorted by providing

1. Capacitors at the receiving end
2. Resistors at the receiving end
3. Reactors at the receiving end
4. Transformers at the receiving end

Correct Ans: C

Q55.Ring main distribution system is preferred to a radial distribution system because

1. It is less expensive.
2. Voltage drop in the feeder is more.
3. Power factor is higher.
4. Supply is more reliable.

Correct Ans: D

Q56.The ground wires protect the transmission lines against

1. Indirect lightning strokes.
2. Direct lightning strokes.
3. Direct and Indirect lightning strokes.
4. Switching surges.

Correct Ans: C

Q57.Numbers which are allotted to the peripherals of a computer are called IRQ. IRQ stands for

1. Interrupt request.
2. Important request
3. Inter request que.
4. Information request que.

Correct Ans: A

Q58.In a dynamically unstable system.

1. Governor action has no effect
2. Load on the system is less than the energy input.
3. Oscillations may increase till the system synchronism is lost.
4. Oscillations may decrease till the system comes back to synchronism.

Correct Ans: C

Q59.Location of the lightning arrester is near the

1. Generator
2. Transformer
3. Bus-bar
4. Circuit breaker

Correct Ans: B

Q60.Which of the following circuit breaker is preferred for EHT (EHV/UHV) applications?

1. \(Air \: blast\)
2. \(Minimum \: oil\)
3. \(SF_6\)
4. \(Vacuum\)

Correct Ans: C

Q61.For optimum generator scheduling for different power plants, the minimum fuel cost is obtained when

1. The incremental fuel cost of each plant is the same.
2. The penalty factor of each plant is same
3. The incremental fuel cost of each plant multiplied by the penalty factor is the same
4. The ratio of the incremental fuel cost of each plant to the penalty factor is the same.

Correct Ans: C

Q62.Tappings are normally provided on the high voltage winding of transformer

1. Only because it has to handle low currents
2. Only because it is easily accessible physically
3. Only because it has larger number of turns which allows smoother variation of voltage
4. Because it has large number of turns, has to handle low currents and is also easily accessible physically

Correct Ans: D

Q63.The stored data from a RAM is lost when the power goes off. So, the RAM may be termed as a

1. Volatile memory
2. Read memory.
3. Non-Volatile memory.
4. Random memory.

Correct Ans: A

Q64.A circuit is disconnected by isolators when...

1. there is no current in the line
2. line is energized
3. line is on half load
4. circuit breaker is not open

Correct Ans: A

Q65.A lead sheath in the underground cable is provided

1. To protect against the entry of moisture
2. To protect the cable from mechanical injury
3. To provide strength to cable
4. To provide proper insulation

Correct Ans: A

Q66.If voltage is increased by n times, the size of the conductor would

1. increase by \(n\) times
2. reduce by \(\frac{1}{n}\) times
3. increase by \(n^2\) times
4. reduce by \(\frac{1}{n^2}\) times

Correct Ans: D

Q67.Lamp flicker caused by heavy fluctuating loads can be reduced by

1. By connecting inductors in parallel with the primary distribution lines.
2. By connecting capacitors in parallel with the primary distribution lines.
3. By connecting capacitors in series with the primary distribution lines.
4. By connecting inductors in series with the primary distribution lines.

Correct Ans: C

Q68.Before disconnecting an ammeter from an energized current transformer circuit, the current transformer

1. Primary should be opened.
2. Secondary should be shorted.
3. Secondary should be opened.
4. Primary should be shorted.

Correct Ans: B

Q69.\(30^\circ\), \(60^\circ\) and \(90^\circ\) connections are provided in a directional relay

1. To render the relay maximum torque under fault conditions.
2. To render the relay minimum torque under fault conditions.
3. To render the relay zero torque under fault conditions.
4. To render the relay constant torque under fault conditions.

Correct Ans: A

Q70.A man holds both the terminals of a 500 V meggar, but is still safe due to

1. High voltage.
2. Very low current
3. High resistance of the body.
4. Low resistance of the body.

Correct Ans: B

Q71.In load flow study, a PV bus is treated as a PQ bus when

1. Voltage limit is violated
2. Active power limit is violated
3. Phase angle is high
4. Reactive power limit is violated

Correct Ans: D

Q72.Due to the effect of arc resistance, a relay tends to

1. Reach.
2. Overreach.
3. Downreach.
4. Underreach.

Correct Ans: B

Q73.According to Indian Electricity rules, the maximum allowable variation between the declared and actual voltage at the consumer's premises should be

1. \(\pm6\)%
2. \(\pm5\)%
3. \(\pm10\)%
4. \(\pm8\)%

Correct Ans: A

Q74.100% string efficiency means :

1. Self capacitance is zero
2. Self capacitance is maximum
3. Shunt capacitance is zero
4. Shunt capacitance is maximum

Correct Ans: C

Q75.During parallel resonance,

1. The circuit impedance minimum.
2. Power factor is zero.
3. Line current is maximum.
4. Power factor is unity.

Correct Ans: D

Q76. Multimeter can be used for measuring

1. Both A.C. and D.C
2. A.C. only.
3. D.C. only.
4. Half wave rectified A.C.

Correct Ans: A

Q77.In the measurement of power using two wattmeter method, when the power factor is unity

1. One of the wattmeters will read zero.
2. Both the wattmeters will read maximum.
3. Both the wattmeters will read positive and equal.
4. Both the wattmeters will read minimum.

Correct Ans: C

Q78.A string of suspension insulators has three discs. If the disc nearest to the conductor flashes over, then

1. The remaining discs will flash over.
2. Only the top disc will flash over.
3. The remaining discs will remain intact.
4. The second disc will flash over.

Correct Ans: C

Q79.In a circuit breaker, the total time duration from the instant of occurrence of the fault to the instant of arc extinction is called

1. Operation time.
2. Total fault clearing time.
3. Lead time.
4. Lag time.

Correct Ans: B

Q80.Pressing Ctrl-Alt-Del will

1. Delete a file.
2. Execute an application program.
3. Invoke a DOS transient routine.
4. Reboot DOS without having to shut off the computer.

Correct Ans: B

Q81.For transmission of power over a distance of 500 km, the transmission voltage should be in the range

1. 150 to 220kV
2. 100 to 120 kV.
3. 60 t0 100 kV.
4. 20 to 50 kV.

Correct Ans: A

Q82.Whenever the conductor are dead ended or there is a change in direction of transmission line the insulator used

1. pin type
2. shackle type
3. strain type
4. disc type

Correct Ans: C

Q83.A line from which loads are tapped off is called

1. Feeder
2. Distributor
3. Service Mains
4. None of the above

Correct Ans: B

Q84.For a consumer the most economical power factor is generally

1. 0.5 lagging
2. 0.95 leading
3. 0.95 lagging
4. 0.5 leading

Correct Ans: C

Q85.Which of the following performs the function of modulation and demodulation ?

1. Fiber optic cable.
2. Modem
3. Co-axial cable.
4. Satellite.

Correct Ans: B

Q86.Corona effect can be reduced by

1. Increasing conductor size
2. Decreasing conductor spacing.
3. Decreasing conductor size.
4. Increasing conductor spacing.

Correct Ans: A

Q87.Which of the following relays is used on long transmission lines ?

1. Mho's relay
2. Impedance relay
3. Reactance relay
4. none

Correct Ans: A

Q88.When a group of computers are connected together in a small area without the help of telephone lines, it is called a

1. Remote Communication Network.
2. Wide Area Network.
3. Value Added Network.
4. Local Area Network.

Correct Ans: D

Q89.The distribution transformers are designed to keep the iron losses minimum because

1. The primary of the distribution transformer is energized for all the twenty four hours
2. Iron losses will reduce the efficiency of transformer
3. Iron losses may damage the insulation
4. Iron losses will heat up the coil.

Correct Ans: A

Q90.If the insulation resistance of a cable of length 10 Km is 1 M\(\Omega\), its insulation resistance for 50 Km length will be

1. 1 M\(\Omega\)
2. 5 M\(\Omega\)
3. 0.2 M\(\Omega\)
4. 2 M\(\Omega\)

Correct Ans: C

Q91.In the iterative computation of bus voltages using Gauss Seidel method, the acceleration of convergence factor '\(\alpha\)' is used to

1. Increase the accuracy of the G.S. method.
2. Simplify the G.S. method.
3. Reduce the memory used in the G.S. method.
4. Speed up the convergence between iterations

Correct Ans: D

Q92.Sag is provided in overhead lines so that

1. safe tension is not exceeded
2. repair can be made
3. conductor material is saved
4. none of the above

Correct Ans: A

Q93.Series capacitors on transmission lines are of little use when the load VAR requirement is

1. Large
2. small
3. First increasing and then decreasing
4. Fluctuating.

Correct Ans: A

Q94.In the stepped time distance characteristics of impedance relays, the second zone of protection gives protection to

1. 50% of the first protection zone and 50% of the second protective zone.
2. 80% of the first protection zone and 50 % of the second protective zone
3. 20 % of the first protection zone and second 50 % of the second protective zone.
4. 100% of the first protection zone and second 50 % of the second protective zone.

Correct Ans: B

Q95.The capacitance of a transmission line is neglected in case of a/an

1. Long line.
2. Short line
3. Medium line
4. EHV line.

Correct Ans: B

Q96.In a transformer, the minimum voltage regulation occurs when the power factor of the load is

1. Unity
2. 0.5
3. Lagging.
4. Leading

Correct Ans: D

Q97.A consumer who consumes more electrical energy should pay

1. More fixed charges per unit
2. Less running charges per unit.
3. Same fixed charges per unit
4. Less fixed charges per unit.

Correct Ans: D

Q98.Thermal relays are often used in

1. Generator protection
2. Motor starters.
3. Transformer protection.
4. Alternator protection.

Correct Ans: B

Q99.The distributors for residential areas are

1. single phase
2. three phase
3. three phase four wire
4. none of the above

Correct Ans: C

Q100. Transformer cores are built up of laminations rather than from solid metal so that

1. Eddy current loss is reduced
2. Oil penetrates into the core more easily.
3. Turns ratio is higher than the voltage ratio.
4. Less insulation is required for the windings.

Correct Ans: A

Q1.Choose the correct verb form for the following sentences.
Either rancho or his friends ____ present in the class.

1. was
2. were
3. is
4. none of the above

Correct Ans: B

Q2.Choose a proper word for the following sentence.
There isn't ____chocolate in the jar.

1. some
2. many
3. any
4. none of the above

Correct Ans: C

Q3.Choose a proper word for the following sentence.
He is ___ best employee of the month.

1. a
2. an
3. the
4. none

Correct Ans: C

Q4.Choose the correct verb form for the following sentences.
Dal, Bati, and Churma ____my favorite dish.

1. is
2. are
3. a
4. the

Correct Ans: A

Q5.Select a proper verb for the following sentences.
One thousand rupees ____not a big amount these days.

1. is
2. a
3. are
4. the

Correct Ans: A

Q6.Choose a proper word for the following sentence.
_____ of his parents are well-educated.

1. Both
2. some
3. All
4. A

Correct Ans: A

Q7.Choose an appropriate model auxiliary for the following sentence.
Every one ___keep surrounding clean.

1. can
2. should
3. could
4. none of the above

Correct Ans: B

Q8.Choose an appropriate model auxiliary for the following sentence.
___ God bless you !

1. Will
2. May
3. Can
4. Might

Correct Ans: B

Q9.Choose proper preposition for the sentence.
I shall meet you____ Monday.

1. on
2. on
3. in
4. none of the above

Correct Ans: A

Q10.Choose proper preposition for the sentence.
Beware ____ the dog.

1. off
2. in
3. of
4. on

Correct Ans: C

Q11.Choose proper preposition for the sentence.
I will meet you at six o'clock____the evening

1. in
2. at
3. on
4. from

Correct Ans: A

Q12.Choose a proper verb form to complete the following sentence.
Have you ever ____ a white tiger ?

1. see
2. seen
3. saw
4. show

Correct Ans: B

Q13.Choose a proper verb form to complete the following sentence.
A stitch in time ___ nine.

1. saves
2. save
3. sew
4. sewing

Correct Ans: A

Q14.Choose a proper verb form to complete the following sentence.
The examination____befor they reached college.

1. start
2. starting
3. started
4. none

Correct Ans: C

Q15.Choose a proper verb form to complete the following sentence.
Haste ___waste.

1. make
2. making
3. makes
4. None

Correct Ans: C

Q16.A series R-L-C circuit has a resonant frequency of \(1000 Hz\), If the values of R, L and C are doubled, the new resonant frequency is __________.

1. \(1000 Hz\)
2. \(500 Hz\)
3. \(250 Hz\)
4. \(2000 Hz\)

Correct Ans: B

Q17.For a d.c. circuit capacitor is ___________.

1. virtually an open circuit
2. virtually a short circuit
3. depends on polarity
4. depends on voltage magnitude

Correct Ans: A

Q18.1k\(\Omega\), 1W resistor can safely pass a current of

1. 30 mA
2. 100 mA
3. 150 mA
4. 500 mA

Correct Ans: A

Q19.The number of insulator discs ( each rated 11 KV ) required in a suspension type insulator string of 220 KV line is_________.

1. 20
2. 22
3. 12
4. 16

Correct Ans: D

Q20.A 40 KVA transformer has a core loss of 400 W and a full load copper loss of 800 W. The proportion of full load at maximum efficiency is__________.

1. 0.5
2. 0.623
3. 0.707
4. 0.577

Correct Ans: C

Q21.The electric breakdown strength of insulating materials depends on

1. Nature of applied voltage
2. Imperfection of dielectric material
3. Pressure, temperature and humidity
4. All of the above

Correct Ans: D

Q22.Two transformers A and B equal outputs and voltage ratio but unequal percentage impedance of 2 and 4 are operating in parallel. The transformer A will be overloaded by___________percent.

1. 0.5
2. 0.33
3. 0.66
4. 0.25

Correct Ans: B

Q23.In a series R-L-C circuit the Q factor is given by:

1. \(\frac{1}{R}\sqrt{\frac{L}{C}}\)
2. \(R\sqrt{\frac{L}{C}}\)
3. \(R\sqrt{\frac{C}{L}}\)
4. \(\frac{1}{R}\sqrt{\frac{C}{L}}\)

Correct Ans: A

Q24.Which of the following connection of transformers will give the highest value of secondary voltage?

1. Delta primary delta secondary
2. Delta primary star secondary
3. Star primary star secondary
4. Star primary delta secondary

Correct Ans: B

Q25.In series R-C circuit, with the increase in frequency, current_________

1. Reduces
2. Increases
3. Does not change
4. Becomes zero

Correct Ans: B

Q26.In which of following transmission lines, the value of shunt admittance should be approximated to zero ?

1. A 66 KV 35 Km long line
2. A 132 KV 200 Km long line
3. A 200 KV 300 Km long line
4. A 400 KV 500 Km long line

Correct Ans: A

Q27.In an R-C phase shift oscillator, the minimum no. of R-C networks to be connected in cascade will be

1. 1
2. 2
3. 3
4. 4

Correct Ans: C

Q28.The inductance of the power transmission line increases with

1. decrease in line length
2. increase in diameter of the conductor
3. increase in spacing between conductors
4. increase in load current

Correct Ans: C

Q29.The major criteria for selection of size of distributor for a radial distribution system is

1. corona loss
2. temperature rises
3. capital cost
4. voltage drop

Correct Ans: D

Q30.The p.u. imdedance value of an alternator corresponding to base values of 13.2 KV and 30 MVA is 0.2 p.u. The p.u. value for the base 13.8 KV and 50 MVA will be_________.

1. 0.306 p.u.
2. 0.33 p.u.
3. 0.318 p.u.
4. 0.328 p.u.

Correct Ans: A

Q31.A shunt fault is characterised by_____________

1. increase in current, frequency and p.f.
2. increase in current, reduction in frequency and increase in p.f.
3. increase in current, reduction in frequency and p.f.
4. None of the above

Correct Ans: C

Q32.In Merz-Price percentage differential protection of a Δ - Y transformer, the CT secondaries connection in the primary and secondary windings of the transformer would be in the form

1. \(\Delta - Y\)
2. \(Y - \Delta\)
3. \(\Delta - \Delta\)
4. \(Y - Y\)

Correct Ans: B

Q33.In a power station, the cost of generation of power reduces when

1. diversity factor alone increases
2. both diversity factor and load factor increase
3. load factor alone increase
4. both diversity factor and load factor decrease

Correct Ans: B

Q34.A Consumer finds that after running 10 KVA equipment on full load for six hours, his energy consumption was 48 KWH. It can concluded that

1. The load factor of consumer for the day was unity
2. The maximum demand of consumer is 10 KW
3. The equipment was drawing only reactive power
4. The power factor of equipment was 0.8

Correct Ans: D

Q35.For complete protection of a 3- phase line

1. 3 phase and 3 earth fault relays are required
2. 3 phase and 2 earth fault relays are required
3. 2 phase and 2 earth fault relays are required
4. 2 phase and 1 earth fault relays are required

Correct Ans: D

Q36.A single phase transmission line of Impedance j0.8 Ω supplies a resistive load of 500 A at 300 V. The sending power factor is

1. Unity
2. 0.8 lagging
3. 0.8 leading
4. 0.6 lagging

Correct Ans: D

Q37.In G-S method of power flow problem, the number of iterations may be reduced if the correction in voltage at each bus is multiplied by

1. Deceleration constant
2. Acceleration constant
3. Gauss constant
4. Blocking factor

Correct Ans: B

Q38.Maxwell bridge is used to measure

1. Inductance
2. Frequency
3. Capacitance
4. Resistance

Correct Ans: A

Q39.An accurate voltmeter must have an internal impedance of

1. very low value
2. very high value
3. medium value
4. zero value

Correct Ans: B

Q40.A wheatstone bridge can not be used for precision measurements because errors are introduced into on account of

1. Resistance of connecting leads
2. Thermoelectric emfs
3. contact resistances
4. All of these

Correct Ans: D

Q41.___________is an instrument which measures the insulation resistance of an electric circuit relative to earth.

1. Tangent galvanometer
2. Current transformer
3. Megger
4. Voltage transformer

Correct Ans: C

Q42.Which of the following is an integrating type instrument?

1. Voltmeter
2. Wattmeter
3. Ammeter
4. Energy meter

Correct Ans: D

Q43.In the circuit given, the value of R required for the transfer of maximum power to load having resistance of 3\(\Omega\) is__________.

1. 6 \(\Omega\)
2. 3 \(\Omega\)
3. 0
4. 1 \(\Omega\)

Correct Ans: A

Q44.The value of current I flowing through 2 \(\Omega\) resistance in the circuit below equals to______.

1. 5A
2. 0
3. 10A
4. 2.5A

Correct Ans: A

Q45.For parallel operation of two alternators, they must have same________.

1. KVA rating
2. Voltage rating
3. Speed
4. All of the above

Correct Ans: B

Q46.Which type of power plants has the highest total installed capacity in india?

1. Hydro electric
2. Nuclear
3. Thermal
4. Solar

Correct Ans: C

Q47.The sag of the conductors of a transmission line is \(2.5 m\) when the span is \(250 m\). Now if the height of supporting tower is increased by \(25 \%\), the sag will____________.

1. increase by \(25 \%\)
2. decrease by \(25 \%\)
3. decrease by \(50 \%\)
4. remain unchanged

Correct Ans: D

Q48.If a line is 100% series compensated then series resonance occurs at__________.

1. 100 Hz
2. 150 Hz
3. 50 Hz
4. resonance does not depends on line compensation

Correct Ans: C

Q49.The most appropriate operating speeds in rpm of generators used in thermals, nuclear and hydro power plants would be respectively______________.

1. 3000, 3000 and 300
2. 1500, 1500 and 3000
3. 3000, 300 and 1500
4. 300, 1500 and 300

Correct Ans: A

Q50.Ferranti effect in a transmission system is because of

1. Inductive effect of transmission line
2. Capacitive effect of transmission line
3. Corona
4. Resistive effect of transmission line

Correct Ans: B

Q51.A d.c. voltage 230 V is imposed on an unloaded 230 V, 50 Hz transformer, it will__________.

1. give high secondary voltage
2. burn out
3. give secondary voltage as per K
4. None of these

Correct Ans: B

Q52.Distribution transformers have good all day efficiency due to

1. low copper loss
2. low iron loss
3. low copper and iron loss
4. None of these

Correct Ans: B

Q53.What should be KVA rating of each transformer in V-V bank when three phase balanced load is 40 KVA?

1. 19
2. 28
3. 37
4. 23

Correct Ans: D

Q54.The auxiliary consumption in a thermal power (Steam)station is
…

1. 2-5 %
2. 7-10%
3. 10-15%
4. none of the above

Correct Ans: A

Q55.Which of the following is not a source of reactive power?

1. Generators
2. Reactors
3. Resistors
4. Capacitors

Correct Ans: C

Q56.For a load flow solution the quantities specified at the
generator bus are

1. Q and |V|
2. P and Q
3. P and δ
4. P and |V|

Correct Ans: D

Q57.Making capacity of the circuit breaker depends on

1. Operating voltage
2. Short circuit MVA
3. Fault current
4. All of the above

Correct Ans: D

Q58.Which of the following meters with the given range will require smallest shunt resistance?

1. 0-1mA
2. 0-10µA
3. 0-10mA
4. 0-1 A

Correct Ans: B

Q59.Bundled conductors are employed to improve

1. corona performance of the line
2. mechanically stability of the line
3. appearance of the transmission line
4. current carrying capacity of the line

Correct Ans: A

Q60.The rate of rise of restriking (RRRV) voltage depends on

1. both inductance and capacitance of the system
2. the type of circuit breaker
3. the inductance of the system only
4. the capacitance of the system only

Correct Ans: A

Q61.Galloping in transmission line conductors arises generally due to

1. asymmetrical layer of ice formation
2. vortex phenomenon in light winds
3. heavy weight of line conductors
4. adoption of horizontal conductor

Correct Ans: A

Q62.If the positive, negative and zero sequence reactance of an element of a power system are 0.3, 0.3 and 0.8 respectively, then the element would be a 0.8 respectively, then the element would be a

1. synchronous generator
2. static load
3. synchronous motor
4. transmission line

Correct Ans: D

Q63.The surge impedance loading of a 500 km long, 400 KV transmission line is 400 ohms. The SIL(Surge Impedance Loading) is__________.

1. 200 MW
2. 400 MW
3. 1600 MW
4. 2000 MW

Correct Ans: B

Q64.Which of the following is TRUE with respect to HVDC transmission line?

1. For a short distance it is economical over HVAC
2. In HVDC system, harmonics are not generated
3. Use of HVDC can improve system stability
4. Less and cheap terminal equipments are required in HVDC

Correct Ans: C

Q65.The number of electrical degrees passed through in one revolution of a six pole synchronous alternator used for a wind turbine generator is____________.

1. 360
2. 2160
3. 720
4. 1080

Correct Ans: D

Q66.Which is the total installed capacity (in MW) of all types of power station of our country (As per 3/2016) ?

1. About 200000 MW
2. About 300000 MW
3. About 400000 MW
4. About 500000 MW

Correct Ans: B

Q67.The share of wind power generation capacity in India is about__________ of the total generation.

1. \(9\%\)
2. \(17\%\)
3. \(3\%\)
4. \(29\%\)

Correct Ans: A

Q68.Which of following are mandatory functions of Central Electricity Regulatory Commission?

(I) To regulate interstate transmission of electricity

(II) Promotion of investment in electricity industry

(III) To determine tariff for interstate electricity transmission

1. Only (II)
2. (I) and (II)
3. (I) and (III)
4. (II) and (III)

Correct Ans: C

Q69.Which source is best suited for electricity generation in a remote rural area?

1. Nuclear power plant
2. Solar farm
3. Wind farm
4. Biomass

Correct Ans: D

Q70.Two capacitors of 2 \(\mu\)F and 3 \(\mu\)F are charged to 150 V and 120 V respectively, as shown in fig. An uncharged capacitor of capacity 1.5 \(\mu\)F falls to the free end of wire. Then which is wrong statement?

1. Charge on 1.5 \(\mu\)F capacitor is 180 \(\mu\)C
2. Charge on 2 \(\mu\)F capacitor is 120 \(\mu\)C
3. Positive charge flows through A from right to left
4. Positive charge flows through A from left to right

Correct Ans: C

Q71.In a series R-L-C circuit voltage drop across resistance is 8 V, across inductor is 6 V and across capacitor is 12 V then

1. Voltage of source will be leading in the circuit
2. Voltage drop across each element will be less than applied voltage
3. Power factor of the circuit is 3/4
4. None of the above

Correct Ans: D

Q72.A single phase energymeter operating on 230 V and 5 A for 5 hourse makes 1940 revolutions. Meter constant in revolution is 400. The power factor of the load will be

1. 0.6 (lag)
2. 0.85 (lag)
3. 0.707 (lead)
4. Unity

Correct Ans: B

Q73.Power in a d.c. circuit is measured by measuring voltmeter across and current through the circuit. The error in measurement of voltage and current were ± 2% and ± 3% respectively. The error in power measurement will be___________.

1. ± 5%
2. ± 6%
3. ± 1%
4. ± 1.5%

Correct Ans: A

Q74.If the time of operation of a relay for unity TMS is 10 sec, the time of operation for 0.5 TMS will be

1. 10 sec
2. 5 sec
3. 40 sec
4. 20 sec

Correct Ans: B

Q75.Which of the following is useful for frequency measurement?

1. Wien bridge
2. Andarson's bridge
3. C.V.T.
4. Hay's bridge

Correct Ans: A

Q76.In computer language 1 MB (one Mega Byte) means how many Bytes?

1. 10,00,00
2. 10,00,000
3. 10,24,000
4. 10,48,576

Correct Ans: D

Q79.In which of the following form, data is stored in computer?

1. Decimal
2. Octal
3. Binary
4. Hexadecimal

Correct Ans: C

Q81.Which type of software is an operating system