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Power Systems

Power Systems
Length of short transmission line is up to

 80 km
 any of the above
 150 km
 40 km

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Power Systems
Plant capacity factor value is

 less than 1
 0
 1
 greater than 1

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Power Systems
An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 400/5. The pick up value is

 15 A
 12.5 A
 6.25 A
 10 A

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Power Systems
A power generating station has a maximum demand of 1000 MW. The annual load factor is 75% and plant capacity factor is 60%. Calculate the reserve capacity?

 250 MW
 1250 MW
 750 MW
 500 MW

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Power Systems
What are the tests performed for oil-filled and gas-filled cables ?

 Impulse tests.
 Thermal stability test.
 Load cycle tests.
  All of these.

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Power Systems
Which of the following power plants can generate power at unpredictable or uncontrollable time

 Wind turbine.
 Pulverising unit.
 Cooling tower.
 Condenser.

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