Govt Exams Mock Test FREE | Online Quiz Competition

Q1. In a D.C. transmission line which statement is true?

it is necessary for sending and receiving end to be operated in synchronism

there are no effects due to inductive and capacitive reactances

the effects of inductive and capacitive reactances are greater than in ac transmission line of the s

power transfer capability is limited by stability considerations

Q2. For a 15-bus power system with 3 voltage controlled bus, the size of Jacobian matrix is

11 X 11

12 X 12

24 X 24

25 X 25

Q3. Which of the following statement is true

At higher voltage, cost of transmission is increased

efficiency decreased

At higher voltage, cost of transmission is reduced

all of the above

Q4. In a power system, the range of torque angle for which \(\frac{dp}{d\delta} \) is positive, lies between:

0° and 180°

0° and 90°

90° and -90°

0° and -90°

Q5. The normal percentage bias setting of differential relay used for transformer protection will be

above 75%

between 10% and 50%

between 50% and 75%

below 10%

Q6. Consider the following statements and select the correct answer:
Statement 1: Series capacitor increases the load angle for the same amount of power transfer with constant values of sending end and receiving end voltages.
Statement 2: Series capacitor helps to equalize the power sharing between the lines.

Both Statement 1 and Statement 2 are TRUE

Statement 1 is FALSE and Statement 2 is TRUE

Statement 1 is TRUE and Statement 2 is FALSE

Both Statement 1 and Statement 2 are FALSE

Q7. A 3-phase, \(66kV\) power cable delivering power at 50 Hz, has a capacitance of \(0.2 \mu F/km\). If the dielectric loss tangent of cable is \(2 \times 10^{-4}\), then dielectric power loss in this cable in \(W/km/phase\) is _____.

18.2

22

25

15.2

Q8. A lighting discharge between clouds during a thunder storm is of 30 C. The time of the discharge is 10 msec. Determine the average lighting current:

2 kA

3 kA

4 kA

1 kA

Q9. Surge impedance loading of a transmission line can be increased by

increasing its voltage level

addition of lumped inductance in parallel

addition of lumped capacitance in series

both A & C

Q10. The solar radiation falls at the Earth's surface includes:
(i) Direct radiation that has passed through the atmosphere
(ii) Diffuse radiation from the sky
(iii) Absorbed radiation from the water
Select the correct answer using the code given below:

(i) , (ii) and (iii)

(ii) and (iii)

(i) and (ii)

(i) and (iii)

Quiz

Year 2025

May
Week # 3 Quiz 1

Q1. In a D.C. transmission line which statement is true?

Q2. For a 15-bus power system with 3 voltage controlled bus, the size of Jacobian matrix is

Q3. Which of the following statement is true

Q4. In a power system, the range of torque angle for which \(\frac{dp}{d\delta} \) is positive, lies between:

Q5. The normal percentage bias setting of differential relay used for transformer protection will be

Q7. A 3-phase, \(66kV\) power cable delivering power at 50 Hz, has a capacitance of \(0.2 \mu F/km\). If the dielectric loss tangent of cable is \(2 \times 10^{-4}\), then dielectric power loss in this cable in \(W/km/phase\) is _____.

Q8. A lighting discharge between clouds during a thunder storm is of 30 C. The time of the discharge is 10 msec. Determine the average lighting current:

Q9. Surge impedance loading of a transmission line can be increased by

Q10. The solar radiation falls at the Earth's surface includes:
(i) Direct radiation that has passed through the atmosphere
(ii) Diffuse radiation from the sky
(iii) Absorbed radiation from the water
Select the correct answer using the code given below:

Quiz

Year 2025

January Week # 2 Expire on 07 Feb 2025

January Week # 3 Expire on 14 Feb 2025

January Week # 4 Expire on 21 Feb 2025

February Week # 1 Expire on 28 Feb 2025

May Week # 3 Quiz 1

Q1. In a D.C. transmission line which statement is true?

Q2. For a 15-bus power system with 3 voltage controlled bus, the size of Jacobian matrix is

Q3. Which of the following statement is true

Q4. In a power system, the range of torque angle for which \(\frac{dp}{d\delta} \) is positive, lies between:

Q5. The normal percentage bias setting of differential relay used for transformer protection will be

Q7. A 3-phase, \(66kV\) power cable delivering power at 50 Hz, has a capacitance of \(0.2 \mu F/km\). If the dielectric loss tangent of cable is \(2 \times 10^{-4}\), then dielectric power loss in this cable in \(W/km/phase\) is _____.

Q8. A lighting discharge between clouds during a thunder storm is of 30 C. The time of the discharge is 10 msec. Determine the average lighting current:

Q9. Surge impedance loading of a transmission line can be increased by

Q10. The solar radiation falls at the Earth's surface includes: (i) Direct radiation that has passed through the atmosphere (ii) Diffuse radiation from the sky (iii) Absorbed radiation from the water Select the correct answer using the code given below:

Record & Track Your Performance

May
Week # 3 Quiz 1

Q10. The solar radiation falls at the Earth's surface includes:
(i) Direct radiation that has passed through the atmosphere
(ii) Diffuse radiation from the sky
(iii) Absorbed radiation from the water
Select the correct answer using the code given below: