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MCQ
BASIC ELECTRONICS
CONTROL SYSTEM ENGINEERING
DIGITAL ELECTRONICS
ELECTRICAL CIRCUIT ANALYSIS
ELECTRICAL ENERGY CONSERVATION AND AUDITING
ELECTRICAL ENGINEERING MATERIALS
ELECTRICAL MACHINES
ELECTRICAL VEHICLES
ELECTRICAL WIRING
ELECTROMAGNETICS
MEASUREMENT & INSTRUMENTATION
MICROPROCESSOR AND MICROCONTROLLER INTERFACING
POWER ELECTRONICS & DRIVES
POWER SYSTEM
SIGNALS & SYSTEMS
UTILIZATION OF ELECTRICAL ENERGY
UTILIZATION OF ELECTRICAL ENERGY
Q1.
\(Candela/metre^2\) is the unit of which photometric quantity?
Luminous Intensity
Illuminance
Luminance
Luminous flux
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Solution
Q2.
Candela is the unit of___________.
Luminous flux
Luminous intensity
Wavelength
Electricity
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Solution
Q3.
Which of the following methods of heating is independent of supply frequency?
Electric heating
Induction heating
Electric resistance heating
Dielectric heating
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Solution
Q4.
The choke in tube light wiring provides
high impulse voltage
high current
high resistance
low resistance
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Solution
Q5.
A 60 W lamp, given a luminous flux of 1500 lumen will have an efficiency of
1500 lumen/watt
250 lumen/watt
25 lumen/watt
2.5 lumen/watt
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Solution
Q6.
The power factor will be leading in case of
Induction heating
Resistance heating
Dielectric heating
Arc heating
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Solution
Q7.
In electrical resistance welding material of electrode should have
higher thermal conductivities
higher electrical conductivities
sufficient strength to sustain high pressure at elevated temperatures
all of the above
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Solution
Q8.
When a resistance elements of a heater gets fused, we remove a portion of it and reconnect it to the same supply, the power drawn by heater will
increase
decrease
remain unchanged
zero
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Solution
Q9.
Dielectric strength of rubber is
10 kV per mm
100 kV per mm
30 kV per mm
15 kV per mm
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Solution
Q10.
The power factor of a spot welding machine is expected to be around:
unity
0.8 lagging
0.8 leading
0.3 to 0.5 lagging
Show Answer
Solution
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2
3
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