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Power Systems

Power Systems
Peak load power plants is/are

 nuclear plants
 both 1 and 2
 pumped storage plant
 diesel plant

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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

 6
 8
 5
 2

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Power Systems
Proximity effect depends on

 frequency
All of these
 relative permeability
 distance between the conductors

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Power Systems
A diesel power plant is generally used as a/an

 Base load.
 Peak loads.
 Standby/emergency plant.
 Any of above.

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Power Systems
The fact that current density is higher at the surface when compared to centre is known as

 carona
 proximity effect
 skin effect
All of these

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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
 two
 six

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