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Power Systems

Power Systems
The most commonly used material for insulators of overhead lines is

 glass
 PVC
 porcelain
 mica

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Power Systems
In Francis turbine runner, the number blades is usually of the order of

 12 - 14.
 6 - 8.
  16 - 24.
 3 - 6.

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Power Systems
A coal fired steam power station working at a plant factor of 80% has one 500 MW generating unit. If the heat content of coal is 2 kWh/kg, the overall plant efficiency is 40% and a train load of coal is 2000 metric tons, then the number of trains required daily for the plant is

 2
 16
 10
 6

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Power Systems
Most commonly used material for insulator is

 porcelain
 glass
All of these
 mica

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Power Systems
In a thermal power plants, pressure in the working fluid cycle is developed by

  feed water pump.
 superheater.
 turbine.
 condenser.

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Power Systems
For variable heads of near about but less than 30 meters, which type of turbine is used in hydro power station?

 Pelton
None of these
 Kaplan
 Francis

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