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Power Systems

Power Systems
Mho relay is used for protection of

  long lines.
  short lines.
  none of these.
  medium lines.

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Power Systems
Corona loss is ----------------- on hilly areas than as plain areas.

 remain same
 more
 less
None of these

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Power Systems
The essential requirement(s) for power plants to be operated as peak load plants are

 Quick response to load variation.
 Capability of quick starts.
All of these
 Low capital cost.

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Power Systems
What are the methods of laying underground cables?

 Direct laying.
  Both A and B.
 None of these.
 Draw - in - system / duct - pipe laying.

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Power Systems
Which of the following is low specific speed turbine?

None of these
 Pelton
 Kaplan
 Francis

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Power Systems
The zero sequence current of a generator for line to ground fault is j3 pu. Then the current through the neutral during the fault is

 j3 pu
 j1 pu
 j9 pu
 j6 pu

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