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Power Systems

Power Systems
The insulation of modern EHV is designed based on

  switching voltage.
 lightning voltage.
 corona.
 RI.

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Power Systems
Which of following are the fertile materials

 U238 and Pu239.
 U238 and Th239.
 U233 and Pu239.
  U238 and Th232.

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Power Systems
Length of short transmission line is up to

 80 km
 any of the above
 40 km
 150 km

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Power Systems
Find the propagation constant, if impedance is 10Ω and admittance is 10 â„§?

 5
 1
 10
 100

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Power Systems
If a 500 MVA, 11 kV 3-phase generator at 50 Hz feeds through a transfer impedance of (0+j0.605) Ω/phase, an infinite voltage also at 11 kV, then the maximum steady state power transfer on the base of 500 MVA and 11 kV is

 0.8 pu
 1 pu
 0.5 pu
 0.4 pu

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Power Systems
Most commonly used material for insulator is

All of these
 glass
 porcelain
 mica

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