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Power Systems

Power Systems
Condition for zero voltage regulation is

 cosφ = R/X
 tanφ = X/R
 tanφ = R/X
 cosφ = X/R

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Power Systems
Advantages of higher transmission voltage is/are

All of these
 Power transfer capability of the transmission line is increased
 Transmission line losses are reduced
 Area of cross section and volume of the conductor is reduced

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Power Systems
Which of the following material is not used as fuse element?

  Aluminium.
  Silver.
  Copper.
  Carbon.

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Power Systems
When reactance grounding is used in network, the voltage between neutral and ground is

 IR0 × Xn
 IN × Xn
 3×IR0 × Xn
 both 1 and 3

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Power Systems
Highest pressure generating pump inside the thermal plant is

All of these
 low pressure heater
 boiler feed pump
 high pressure heater

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Power Systems
The water from a catchment is 60*106 cu m annually and hydro station has head of 40 m. Assuming ideal generator and turbine, the power that can be theoretically generated is

 750 kW
 500 kW
 250 kW
 300 kW

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