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Power Systems

Power Systems
The average thermal efficiency of a modern nuclear power plant is about

 80 %.
  30 %.
 60 %.
 40 %.

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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

  30.26 %.
 40 %.
  30.7 %.
 40.85 %.

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Power Systems
Find the number of insulator discs required in string insulator, if operating voltage is 220 kV and maximum voltage of each disc is 11 kV?

 10
 20
 21
 13

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Power Systems
The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of

 high energy loss in boilers
 low alternator efficiency
 high energy loss in condenser
 low steam turbine mechanical efficiency

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Power Systems
What is the function of economiser in steam boilers

 cooling
 improving thermal efficiency
All of these
 collect ash particals

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Power Systems
Which of the following contributes to the Rankine cycle efficiency improvement in a thermal power plant

 Reheat of steam an intermediate stages.
 Use of high pressure.
 Use of steam for heating of boiler feed water.
All of these

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