An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is

Power Systems
An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is

4.28 pu

3.75 pu

2.5 pu

7.25 pu

4.28 pu

3.75 pu

2.5 pu

7.25 pu

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Power Systems
Which of the following statements is/are true regarding HVDC?

There is no skin effect in dc line

HVDC can utilize earth for its return path

All of these

Corona loss is very much reduced in the dc line

There is no skin effect in dc line

HVDC can utilize earth for its return path

All of these

Corona loss is very much reduced in the dc line

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Power Systems
Which of following is a medium and low head turbines

Kaplan and Francis turbines.

Pelton and Kaplan turbines.

Francis and Kaplan turbines.

None of above.

Kaplan and Francis turbines.

Pelton and Kaplan turbines.

Francis and Kaplan turbines.

None of above.

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Power Systems
A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10-6∠90° â„§. Find the no load receiving end voltage?

500 kV

600 kV

320 kv

400 kV

500 kV

600 kV

320 kv

400 kV

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Power Systems
In a biased differential relay the bias is defined as the ratio of

operating coil current and restraining coil current.

fault current and operating coil current.

number of turns of restraining and operating coil.

fault current and restraining coil current.

operating coil current and restraining coil current.

fault current and operating coil current.

number of turns of restraining and operating coil.

fault current and restraining coil current.

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Power Systems
A transmission line has 200 km operating at frequency of 10 Hz Hz. Find the type of the line

medium transmission line

short transmission line

long transmission line

any of the above

medium transmission line

short transmission line

long transmission line

any of the above

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Power Systems

Power Systems An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is

Power Systems Which of the following statements is/are true regarding HVDC?

Power Systems Which of following is a medium and low head turbines

Power Systems A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10-6∠90° â„§. Find the no load receiving end voltage?

Power Systems In a biased differential relay the bias is defined as the ratio of

Power Systems A transmission line has 200 km operating at frequency of 10 Hz Hz. Find the type of the line

Power Systems
An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is

Power Systems
Which of the following statements is/are true regarding HVDC?

Power Systems
Which of following is a medium and low head turbines

Power Systems
A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10-6∠90° â„§. Find the no load receiving end voltage?

Power Systems
In a biased differential relay the bias is defined as the ratio of

Power Systems
A transmission line has 200 km operating at frequency of 10 Hz Hz. Find the type of the line