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Power Systems

Power Systems
Which of the following plants is/are base load plants

 pump storage
 both 1 and 2
 nuclear
 run off river

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Power Systems
The annual depreciation of hydro power plant is about

 15 - 20 %.
 20 - 25 %.
 10 - 15 %.
  0.5 - 1.5 %.

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Power Systems
Ferranti effect occurs under

 full load
 any of the above
 no load
 half load

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Power Systems
An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 500/5. The plug setting multiplier for a fault current of 5 kA is

 2
 6
 8
 5

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Power Systems
For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

 three
 one
 six
 two

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Power Systems
Operating time of pumped storage plant is

 very high
 low
 high
 can't say

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