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

4.28 pu

7.25 pu

2.5 pu

3.75 pu

4.28 pu

7.25 pu

2.5 pu

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Power Systems
In which of the following configuration power transferability is higher?

horizontal configuration

same in both configuration

triangular configuration

None of these

horizontal configuration

same in both configuration

triangular configuration

None of these

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Power Systems
For variable heads of near about but less than 30 m, which type of turbines is used hydro power plant

Francis.

Pelton.

Kaplan.

None of above.

Francis.

Pelton.

Kaplan.

None of above.

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Power Systems
In a thermal power plants, pressure in the working fluid cycle is developed by

turbine.

condenser.

superheater.

feed water pump.

turbine.

condenser.

superheater.

feed water pump.

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Power Systems
The insulator thickness on the conductor, in cables depends upon

reactive power

current

power factor

voltage

reactive power

current

power factor

voltage

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Power Systems
The VSWR of transmission line is

Directly proportional to characteristic impedance and inversely to load impedance.

Directly proportional to voltage minimum and inversely proportional to voltage maximum.

Proportional to load and characteristic impedance.

Directly proportional to load impedance and inversely to characteristic impedance.

Directly proportional to characteristic impedance and inversely to load impedance.

Directly proportional to voltage minimum and inversely proportional to voltage maximum.

Proportional to load and characteristic impedance.

Directly proportional to load impedance and inversely to characteristic impedance.

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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 which of the following configuration power transferability is higher?

Power Systems For variable heads of near about but less than 30 m, which type of turbines is used hydro power plant

Power Systems In a thermal power plants, pressure in the working fluid cycle is developed by

Power Systems The insulator thickness on the conductor, in cables depends upon

Power Systems The VSWR of transmission line 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 which of the following configuration power transferability is higher?

Power Systems
For variable heads of near about but less than 30 m, which type of turbines is used hydro power plant

Power Systems
In a thermal power plants, pressure in the working fluid cycle is developed by

Power Systems
The insulator thickness on the conductor, in cables depends upon

Power Systems
The VSWR of transmission line is