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Power Systems

Power Systems
The amount of ash content in Indian coal

  45 %.
 20 %.
 35 %.
  60 %.

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Power Systems
Which cooling is preferred for large turbine generator

  Oxygen cooling.
  Hydrogen cooling.
  Nitrogen cooling.
  None of these.

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Power Systems
Which of following is a medium and low head turbines

  Pelton and Kaplan turbines.
  None of above.
  Francis and Kaplan turbines.
  Kaplan and Francis turbines.

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Power Systems
Which of the following power stations is mainly used to cover peak load on the system?

 nuclear plant
 gas based thermal power plant
 coal based thermal power plant
 pumped storage hydro power plant

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Power Systems
A thermal protection switch is used to provide protection against

 over voltage.
 temperature.
 short circuit.
  overload.

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Power Systems
Fault calculations using computer are usually done by

 either 1 or 2
 Z bus method
 Y bus method
None of these

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