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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.
  24 kWh.
  24000 kWh.

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Power Systems
Specified quantities of slack bus are

 P and δ
 V and δ
 P and Q
 P and V

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Power Systems
What will be the ratio of the C.T. on the H.V side of a 3 - φ star / delta 33 / 11 kV transformer if the protecting CT on the LV side has a ratio of 300 : 5 ?

 150 : 4 / √3.
  200 : 5 / √3.
  100 : 5 / √3.
 120 : 6 / √3.

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Power Systems
The insulator thickness on the conductor, in cables depends upon

 power factor
 current
 voltage
 reactive power

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Power Systems
When a transformer is loaded, the secondary terminal voltage gains. That means power factor is

  leading.
 lagging.
 zero.
 unity.

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Power Systems
The Y bus matrix of a 100 bus interconnected system is 90% sparse. Then find the number of non zero elements in the Y bus matrix?

 9000
 90
 10
 1000

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