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Power Systems

Power Systems
Which of following materials can be used as coolant

 Helium.
 Heavy water.
  Any of above.
 CO2.

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Power Systems
A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is

  8.06 Ω / phase.
 2.26 Ω / phase.
 4.65 Ω / phase.
 6.06 Ω / phase.

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Power Systems
A diesel power station has fuel consumption of 0.28 Kg per kWh. The calorific value of fuel is being 10000 KCal / kg. Determine the overall efficiency

  30.7 %.
 40 %.
  30.26 %.
 40.85 %.

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Power Systems
A penstock is used as a condition between

 the turbine and discharge drain.
 none of above.
 the heat ex-changer and the turbine in nuclear power plant.
  the dam and the turbine in a hydro station.

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Power Systems
India’s largest thermal power station is located at

 Neyveli.
 Sarni.
 Chandrapur.
 Kota.

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Power Systems
An alternator having an induced emf of 1.6 pu is connected to an infinite bus of 1 pu. If the bus bar has reactance of 0.6 pu and alternator has reactance of 0.2 pu, what is the maximum power that can be transferred?

 2.67 pu
 2 pu
 5 pu
 6 pu

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