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Power Systems

Power Systems
Calorific value of solid fuel is expressed as

  KCal / lt.
  KCal / gm.
  Cal / gm.
  Cal / lt.

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Power Systems
If the fault is very nearer to the generator, the fault current is

 larger
 zero
 less
 any of the above

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Power Systems
The use of high speed circuit breakers

 reduces the short circuit current.
 decrease system stability.
 increased the short circuit current.
  improves system stability.

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Power Systems
The arc voltage produced in an AC circuit breaker is always

 lagging the arc current by 90°.
 leading the arc current by 90°.
  in phase with the arc current.
 in phase opposition with the arc current.

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Power Systems
In an interconnected power system, the most suitable power plant to meet the peak load condition is

 nuclear plant
 pumped storage plant
 hydro power plant
 thermal plant

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Power Systems
A 3-phase breaker is rated at 2000 MVA, 33 kV, its making current will be

  35 kVA.
 70 kVA.
  89.22 kVA.
 49 kVA.

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