Govt Exams Mock Test FREE | Online Quiz Competition

Q1. Which of this is not the microgrid ancillary service during the grid connected mode

Frequency control support

Congestion management

Improving of power quality

Black start

Q2. Due to decline of power system frequency in interconnected power system

The turbine blades get damaged

Generators get damaged

Motors operate with noise

Transmission lines get stresses

Q3. A transmission line has 0.2 pu impedance on a base of 132 kV, 100 MVA. On a base of 220kV, 50MVA, it will have a pu impedance of

\(0.2 \times (\frac{132}{220})^2\)

\(0.1 \times (\frac{132}{220})^2\)

\(0.2 \times (\frac{220}{132})^2\)

\(0.1 \times (\frac{220}{132})^2\)

Q4. The desirable qualities of a power system are

High load factor and high diversity factor

Low load factor and low diversity factor

Low load factor and high diversity factor

High load factor and low diversity factor

Q5. Horizontal axis windmills of modern design can

always turn towards the direction of the wind

never adjust the energy output

Never turn towards the direction of the wind

none of the above

Q6. In case of short transmition line, which constant represents the transfer impedance if it is represented with the dimension ABCD?

B

A

C

D

Q7. For preventing the mal-operation of Merz- Price protection scheme on in-rush of magnetizing current,

Time lag is provided in the relay

The relay restraining coil is biased with the second harmonic current

CT mismatching is removed

Relay sensitivity is reduced by employing a shunt

Q8. Which of the following is the main drawback of 'double bus double breaker' scheme in substations?

It may lose half the circuits for breaker failure if circuits are not connected to both buses

Any breaker cannot be taken out for maintenance separately as in single bus arrangement

In double bus double breaker scheme, each circuit has only one dedicated breakers

This arrangement has no flexibility in permitting feeder circuits to be connected to either bus

Q9. If the circuit breaker has assigned rated breaking current of 25 kA, the breaker can be used for locations where the RMS value of short circuit current is

more than 50 kA

less than 25 kA

more than 25 kA but less than 50 kA

zero

Q10. If a new bus is added in the power system network then size of the \(Y_{bus}\) of N * N matrix will

remain same

N-1 * N+1

N+1 * N+1

N-1 * N-1

Quiz

Year 2025

February
Week # 3 Quiz 1

Q1. Which of this is not the microgrid ancillary service during the grid connected mode

Q2. Due to decline of power system frequency in interconnected power system

Q3. A transmission line has 0.2 pu impedance on a base of 132 kV, 100 MVA. On a base of 220kV, 50MVA, it will have a pu impedance of

Q4. The desirable qualities of a power system are

Q5. Horizontal axis windmills of modern design can

Q6. In case of short transmition line, which constant represents the transfer impedance if it is represented with the dimension ABCD?

Q7. For preventing the mal-operation of Merz- Price protection scheme on in-rush of magnetizing current,

Q8. Which of the following is the main drawback of 'double bus double breaker' scheme in substations?

Q9. If the circuit breaker has assigned rated breaking current of 25 kA, the breaker can be used for locations where the RMS value of short circuit current is

Q10. If a new bus is added in the power system network then size of the \(Y_{bus}\) of N * N matrix will

Quiz

Year 2025

February Week # 1 Expire on 28 Feb 2025

February Week # 2 Expire on 07 Mar 2025

February Week # 3 Expire on 14 Mar 2025

February Week # 4 Expire on 21 Mar 2025

February Week # 3 Quiz 1

Q1. Which of this is not the microgrid ancillary service during the grid connected mode

Q2. Due to decline of power system frequency in interconnected power system

Q3. A transmission line has 0.2 pu impedance on a base of 132 kV, 100 MVA. On a base of 220kV, 50MVA, it will have a pu impedance of

Q4. The desirable qualities of a power system are

Q5. Horizontal axis windmills of modern design can

Q6. In case of short transmition line, which constant represents the transfer impedance if it is represented with the dimension ABCD?

Q7. For preventing the mal-operation of Merz- Price protection scheme on in-rush of magnetizing current,

Q8. Which of the following is the main drawback of 'double bus double breaker' scheme in substations?

Q9. If the circuit breaker has assigned rated breaking current of 25 kA, the breaker can be used for locations where the RMS value of short circuit current is

Q10. If a new bus is added in the power system network then size of the \(Y_{bus}\) of N * N matrix will

Record & Track Your Performance

February
Week # 3 Quiz 1