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Power Systems

Power Systems
In thermal plant most of the energy is wasted in

 turbines
 boiler
 ESP
 condenser

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Power Systems
A steam power generation has an overall efficiency of 20 %. 0.6 Kg of coal is burnt per kWh of electrical energy generated. Calculated the calorific value of fuel

  7166.67 KCal / Kg.
 7000 KCal / Kg.
 7268.45 KCal / Kg.
 7562 KCal / Kg.

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Power Systems
Advantages of pumped storage plants is/are

 used as load frequency control
 most economical as a peak load supply plant
All of these
 operating time is minimum

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Power Systems
For large plants of capacity for more than 15 MW, what type of cooling is used

  Air.
  Hydrogen.
  Liquid.
  Water.

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Power Systems
If the rated receiving end voltage is 33 kV, then what are the limits for safe operation of equipments?

 25 to 35 kV
 any voltage above 33 kV
 33 to 50 kV
 31.35 to 34.65 kV

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Power Systems
A 3 core cable gives on test a capacitance of 3.7 µF between two cores. Find the line charging current of the cable when it is connected to 11 kV, 50 Hz system?

 1 A.
  14.76 A.
 14.7 mA.
 1.476 A.

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