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POWER SYSTEMS

Power Systems
Mechanical energy is supplied to a DC generator at the rate of 4200 J / S. The generator delivers 32.2 Amp at 120 V. How much energy is cost per minute of operation

 23060 J.
 25060 J.
  20060 J.
  20160 J.

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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

 40 %.
  30.7 %.
  30.26 %.
 40.85 %.

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Power Systems
Example of base load stations are

  gas turbine.
  hydro.
  thermal.
  both A and B.

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Power Systems
The time taken by the turbine to fall to 0 rpm speed from 3000 rpm is called

  settling time.
  coasting time.
  stopping time.
  damping time.

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Power Systems
Load frequency control is achieved by properly matching the individual machines

  generated voltages.
  reactive powers.
  turbine inputs.
  generator ratings.

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