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Power Systems

Power Systems
Example of base load stations are

  gas turbine.
  thermal.
  both A and B.
  hydro.

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Power Systems
Buchholz relay is used for protection of

  alternator.
  bus bar.
  none of these.
  transformer.

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Power Systems
Which of the following is/are the effects of corona

All of these
 charging current increases
 interference decreases
 power loss decreases

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Power Systems
What is the preferred type of circuit breaker(CB) to be installed in extra high voltage AC system?

 Sulphur hexafluoride CB
 Vacuum CB
 Bulk oil type CB
 Air blast CB

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Power Systems
A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

 45°
 36°
 42°
 90°

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Power Systems
Asynchronous tie line is a

None of these
 either 1 or 2
 AC transmission line
 DC transmission line

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