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Power Systems

Power Systems
A string type insulator has three units with self capacitance C and ground capacitance of 0.2 C having a string efficiency of

 78%
 82%
 76%
 80%

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Power Systems
Find the value of a729, where "a" is the operator

 1
 α²
 α
 0

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Power Systems
Buchholz relay is used for protection of

  none of these.
  alternator.
  bus bar.
  transformer.

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Power Systems
Direct conversion of heat energy into electrical energy is possible through

 Both A and C.
 Thermal converters.
 MHD generator.
 Fuel or solar cell.

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Power Systems
Advantages of gauss siedel method is/are

 applicable for large power system network
 number of iterations are less
 calculation time for each iteration is less
All of these

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Power Systems
The charging current of a 400 kV line is more than that of a 220 kV line of the same length?

None of these
 False
 True
 either 1 or 2

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