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Power Systems

Power Systems
For 66 kV lines the number of insulator discs of each 11 kV used are

 3
 5
 12
 6

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Power Systems
The annual depreciation of hydro power plant is about

 15 - 20 %.
  0.5 - 1.5 %.
 20 - 25 %.
 10 - 15 %.

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Power Systems
A hydro electric generating station is supplied from a reservoir of capacity 5 × 10 − 6 cubic meters at a head of 200 meters. Find the total energy available in KWh if the overall efficiency is 75 %

 4.06 × 106 kWh.
 5 × 106 kWh.
 3 × 106 kWh.
  2.044 × 106 kWh.

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Power Systems
Stability of a transmission line can be increased by

 both 1 and 2
 shunt capacitor
 series capacitor
 shunt reactor

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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 500/5. The plug setting multiplier for a fault current of 5 kA is

 8
 6
 5
 2

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Power Systems
Which of the following is an impulse turbine

  Pelton turbine.
  None of above.
  Francis turbine.
  Kaplan turbine.

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