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Power Systems

Power Systems
A 10 MVA generator has reactance of 0.2 pu. Find the new reactance value for 50 MVA base?

 0.25 pu
 5 pu
 0.2 pu
 1 pu

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Power Systems
If the inertia constant H = 10 MJ/MVA for a 50 MVA generator, the stored energy is

 500 MJ
 5 MJ
 10 MJ
 50 MJ

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Power Systems
If L and C are 4 mH and 0.0001 μF respectively a current chop of magnitude 50 Amp would induced a voltage

 400 kV.
  100 kV.
  200 kV.
 50 kV.

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Power Systems
Alternate formation and breakage of bubbles are called

All of these
  cavitations.
  surgfication.
  water hamming.

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Power Systems
Find the number of strands of ACSR conductor for 4 layer transmission line?

 7
 29
 37
 1

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Power Systems
String efficiency depends upon

 voltage rating of one SCR.
 voltage rating of whole string.
 no. of SCR in the string.
  all of these.

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