Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line?

Power Systems
Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line?

0.48 Hz

0.52 Hz

-0.52 Hz

50 Hz

0.48 Hz

0.52 Hz

-0.52 Hz

50 Hz

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Power Systems
When a neutral point of 3 - ÃŽÂ¦ system is directly connected to earth then it has what type of grounding?

Resistance.

Solid.

Reactance.

Peterson coil.

Resistance.

Solid.

Reactance.

Peterson coil.

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Power Systems
Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation?

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

both 1 and 2

initial cost is low

smooth voltage regulation is possible by controlling excitation

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

both 1 and 2

initial cost is low

smooth voltage regulation is possible by controlling excitation

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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?

18 MW

10 MW

9 MW

5 MW

18 MW

10 MW

9 MW

5 MW

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Power Systems
Objectives of power system is/are

Cost of electrical energy per KWh is to be minimum

both 1 and 2

Rated voltage and frequency has to be supplied to the consumers

nether 1 nor 2

Cost of electrical energy per KWh is to be minimum

both 1 and 2

Rated voltage and frequency has to be supplied to the consumers

nether 1 nor 2

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Power Systems
Load frequency control is achieved by properly matching the individual machines

generator ratings.

generated voltages.

reactive powers.

turbine inputs.

generator ratings.

generated voltages.

reactive powers.

turbine inputs.

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Power Systems

Power Systems When a neutral point of 3 - ÃŽÂ¦ system is directly connected to earth then it has what type of grounding?

Power Systems Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation?

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 Objectives of power system is/are

Power Systems Load frequency control is achieved by properly matching the individual machines

Power Systems
When a neutral point of 3 - ÃŽÂ¦ system is directly connected to earth then it has what type of grounding?

Power Systems
Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation?

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
Objectives of power system is/are

Power Systems
Load frequency control is achieved by properly matching the individual machines