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Power Systems

Power Systems
How much KWh energy is produced by fission of 1 gm of uranium U235

 240 kWh.
 2400 kWh.
  24000 kWh.
  24 kWh.

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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
Which of the following statements is/are true regarding HVDC?

All of these
 There is no skin effect in dc line
 HVDC can utilize earth for its return path
 Corona loss is very much reduced in the dc line

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Power Systems
Normally Z bus matrix is a

 full matrix
 sparse matrix
 unit matrix
 null matrix

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Power Systems
Offset mho relay is used for the protection of equipment when

 failure of prime mover of the generator
None of these
 either 1 or 2
 loss of excitation of the generator

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Power Systems
A power station has a maximum demand of 15 MW. The plant capacity is 20 MW. Find the reserve capacity of the plant?

 5 MW
 10 MW
 20 MW
 15 MW

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