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Power Systems

Power Systems
A 20 MVA generator has inertia constant of 0.5 pu. Find new value for 50 MVA base?

 0.4 pu
 0.2 pu
 0.1 pu
 0.5 pu

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Power Systems
Peterson coil is used in case of transmission line for

 reduce ferranti effect
 compensation of arcing grounds
 increase the voltage level
 improve power factor

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Power Systems
Which device is used for protection of equipment from from damage caused by overload or short circuit?

 lightning arrester
 circuit breaker
 current transformer
 CVT

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Power Systems
Maximum power capacity of a transmission line can be increased by

 increasing voltage level
 either 1 or 2
 nether 1 nor 2
 decreasing reactance value

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Power Systems
In an induction relay for a particular current setting the operating time 4 sec. When the time multiplier setting is 0.8 if the time multiplier setting is rest to 1 the operating time is

 5.
  un changed.
 10.
  1.

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Power Systems
Pelton turbine is a ----------- turbine

 any of the above
 axial flow
 inward radial flow
 impulsive

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