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Power Systems

Power Systems
If skin depth is more, then skin effect is

 more
 either 1 or 2
 less
None of these

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Power Systems
Cheapest plant in operation and maintenance is

  steam power.
  nuclear.
  hydroelectric.
  diesel power.

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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

 16
 2
 10
 6

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Power Systems
Direct conversion of heat energy into electrical energy is possible through

 Fuel or solar cell.
 Both A and C.
 MHD generator.
 Thermal converters.

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Power Systems
A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is

 4
 20
 10
 8

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Power Systems
The receiving end voltage for a long line under no load condition is

 less than the sending end voltage
 any of the above
 equal to the sending end voltage
 more than the sending end voltage

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