In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is

Power Systems
In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is

250 Ω

1000 Ω

25 Ω

500 Ω

250 Ω

1000 Ω

25 Ω

500 Ω

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Power Systems
Critical mass is

minimum mass of fissionable material required to sustain chain reaction.

maximum mass of fissionable material required to sustain a chain reaction.

a mass of fissionable material required to stop a chain reaction.

none of these.

minimum mass of fissionable material required to sustain chain reaction.

maximum mass of fissionable material required to sustain a chain reaction.

a mass of fissionable material required to stop a chain reaction.

none of these.

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Power Systems
Advantages of shunt compensation is/are

All of these

single unit can be used as both capacitance and inductor by adjusting the excitation

smooth voltage regulation is possible by controlling excitation

It requires less maintanance

All of these

single unit can be used as both capacitance and inductor by adjusting the excitation

smooth voltage regulation is possible by controlling excitation

It requires less maintanance

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Power Systems
A thermal generating station has an installed capacity of 15 MW and supplies a daily load of 10 MW for 12 hours and 5 MW for remaining 12 hours. If the load factor is 0.8. Find the reserve capacity of the station?

5 MW

18 MW

10 MW

9 MW

5 MW

18 MW

10 MW

9 MW

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Power Systems
What type of back up protection is used for alternators?

Mho relay.

Buchholz relay.

IDMT relay.

Impedance relay.

Mho relay.

Buchholz relay.

IDMT relay.

Impedance relay.

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Power Systems
A loss less transmission line having surge impedance loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30 %. Then SIL of compensated transmission line will be

2725 MW.

1835 MW.

3257 MW.

2280 MW.

2725 MW.

1835 MW.

3257 MW.

2280 MW.

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Power Systems

Power Systems In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is

Power Systems Critical mass is

Power Systems Advantages of shunt compensation is/are

Power Systems A thermal generating station has an installed capacity of 15 MW and supplies a daily load of 10 MW for 12 hours and 5 MW for remaining 12 hours. If the load factor is 0.8. Find the reserve capacity of the station?

Power Systems What type of back up protection is used for alternators?

Power Systems A loss less transmission line having surge impedance loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30 %. Then SIL of compensated transmission line will be

Power Systems
In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is

Power Systems
Critical mass is

Power Systems
Advantages of shunt compensation is/are

Power Systems
A thermal generating station has an installed capacity of 15 MW and supplies a daily load of 10 MW for 12 hours and 5 MW for remaining 12 hours. If the load factor is 0.8. Find the reserve capacity of the station?

Power Systems
What type of back up protection is used for alternators?

Power Systems
A loss less transmission line having surge impedance loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30 %. Then SIL of compensated transmission line will be