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Power Systems

Power Systems
Breaking current is a ------------------ value?

 maximum
 average
 RMS
 any of the above

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Power Systems
A generated station has a maximum demand of 30 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is

 6 MW
 5 MW
 10 MW
 12 MW

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Power Systems
A hydro electric generating station is supplied from a reservoir of capacity 5 × 10 − 6 cubic meters at a head of 200 meters. Find the total energy available in KWh if the overall efficiency is 75 %

 3 × 106 kWh.
 5 × 106 kWh.
 4.06 × 106 kWh.
  2.044 × 106 kWh.

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Power Systems
Advantages of pumped storage plants is/are

 operating time is minimum
 most economical as a peak load supply plant
 used as load frequency control
All of these

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Power Systems
MCB stands for

  maximum capacity breaker.
  miniature circuit breaker.
  minimum capacity breaker.
  molded circuit breaker.

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Power Systems
Which of the following materials is/are used as moderators?

All of these
 beryllium
 graphite
 heavy water

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