A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero?

Power Systems
A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero?

30.28 kV

28.28 kV

31.28 kV

29.28 kV

30.28 kV

28.28 kV

31.28 kV

29.28 kV

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Power Systems
The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of

high energy loss in boilers

low steam turbine mechanical efficiency

low alternator efficiency

high energy loss in condenser

high energy loss in boilers

low steam turbine mechanical efficiency

low alternator efficiency

high energy loss in condenser

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Power Systems
Which of the following is/are the disadvantages of phase modifiers?

It consumes both active and reactive power

It requires more maintenance because of running equipment

Initial cost of synchronous phase modifier is higher

All of these

It consumes both active and reactive power

It requires more maintenance because of running equipment

Initial cost of synchronous phase modifier is higher

All of these

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Power Systems
Location of a surge tank, in an hydro electric power station is near

turbine.

dam.

tail race.

reservoir.

turbine.

dam.

tail race.

reservoir.

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Power Systems
The value of inductance used for compensation of arcing grounds is

3/ω²C

3ω²C

1/3ω²C

ω²C/3

3/ω²C

3ω²C

1/3ω²C

ω²C/3

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Power Systems
A CT is connected in ___________________ with the line.

across.

not connected.

series.

both A and B.

across.

not connected.

series.

both A and B.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems

Power Systems A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero?

Power Systems The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of

Power Systems Which of the following is/are the disadvantages of phase modifiers?

Power Systems Location of a surge tank, in an hydro electric power station is near

Power Systems The value of inductance used for compensation of arcing grounds is

Power Systems A CT is connected in ___________________ with the line.

Power Systems
A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero?

Power Systems
The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of

Power Systems
Which of the following is/are the disadvantages of phase modifiers?

Power Systems
Location of a surge tank, in an hydro electric power station is near

Power Systems
The value of inductance used for compensation of arcing grounds is

Power Systems
A CT is connected in ___________________ with the line.