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Power Systems

Power Systems
The rating of CB is in terms of

  voltage.
  volt - ampere.
  VAR.
  current.

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Power Systems
Lightning arresters are made up of which material?

 any of the above
 silver
 copper
 silicon oxide

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Power Systems
A hydro power plant of run off river type should be provided with pondage so that the

 operating head is controlled.
  firm capacity of plant is increased.
 pressure inside the turbine casing remains.
 kinetic energy of the running water is fully utilized.

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Power Systems
NTPC (National Thermal Power Cooperation) has its only thermal power generating unit in West Bengal at

 Farakka.
 Bakreshwar.
 Katwa.
 Durgapur.

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Power Systems
Which of the following is/are the methods of improving transient stability?

 Fast acting governing system
 Dynamic breaking
All of these
 Fast acting excitation control

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Power Systems
The load current in short circuit calculations are neglected because

 short circuit currents are greatly out of phase with load currents
 nether 1 nor 2
 short circuit currents are much larger than load currents
 both 1 and 2

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