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Power Systems

Power Systems
Proximity effect is more in case of

 same in both cases
None of these
 over head lines
 power cables

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

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

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Power Systems
Installation of capacitors at suitable locations and of optimum size in a distribution system results in

All of these
 reduction in distribution power loss
 reduction of KVA rating of distribution transformers
 improved voltage regulation

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Power Systems
Transmission lines are transposed to reduce

 skin effect
 ferranti effect
 proximity effect
 interference with neighbouring communication lines

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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

 5
 8
 6
 2

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Power Systems
Graphite is use din nuclear plant as a / an

 electrode.
 fuel.
  moderator.
 coolant.

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