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

3.75 pu

2.5 pu

4.28 pu

7.25 pu

3.75 pu

2.5 pu

4.28 pu

7.25 pu

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Power Systems
In a pressurized water reactor

heavy water is used as both coolant and moderator.

both B and C.

water is used at high pressure so that it is available is liquid from at about 280° C.

the coolant water boils in the reactor core.

heavy water is used as both coolant and moderator.

both B and C.

water is used at high pressure so that it is available is liquid from at about 280° C.

the coolant water boils in the reactor core.

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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?

600 kV

320 kv

400 kV

500 kV

600 kV

320 kv

400 kV

500 kV

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Power Systems
Reflector nuclear reactor are made of

cast iron.

boron.

beryllium.

steel.

cast iron.

boron.

beryllium.

steel.

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Power Systems
Which one of the following relays has the capability of anticipating the possible major fault in a transformer?

Buchholz relay

Differential relay

Over current relay

Over fluxing relay

Buchholz relay

Differential relay

Over current relay

Over fluxing relay

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Power Systems
If the fault is very nearer to the generator, the fault current is

any of the above

less

larger

zero

any of the above

less

larger

zero

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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 In a pressurized water reactor

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 Reflector nuclear reactor are made of

Power Systems Which one of the following relays has the capability of anticipating the possible major fault in a transformer?

Power Systems If the fault is very nearer to the generator, the fault current 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

Power Systems
In a pressurized water reactor

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
Reflector nuclear reactor are made of

Power Systems
Which one of the following relays has the capability of anticipating the possible major fault in a transformer?

Power Systems
If the fault is very nearer to the generator, the fault current is