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Power Systems

Power Systems
The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base?

 0.1 pu
 0.25 pu
 0.4 pu
 0.2 pu

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Power Systems
The rate of rise of restricting voltage depends upon the

 Capacitance of the system.
 Type of CB.
 Inductance of the system.
  Inductance and capacitance of the system.

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Power Systems
In a thermal power plant, which of its following components needs maximum maintenance attention

 Steam turbine.
 Condenser.
 Boiler.
 Super heater.

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Power Systems
The corona loss on a particular system at 50 Hz is 1 kW/km per phase. What is the corona loss at 60 Hz in kW/km per phase?

 1.13
 1.25
 1
 0.89

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Power Systems
In a 400 kV power network, 360 kV is recorded at 400 kV bus. The reactive power absorbed by a shunt reactor for 50 MVAr, 400 kV connected at the bus is

 45.0 MVAr.
 55.56 MVAr.
  40.5 MVAr.
 61.73 MVAr.

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Power Systems
Which of following power plants normally operage at high speeds

 Diesel engine.
 Hydro electric.
 Petrol engine.
  Thermal.

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