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Power Systems

Power Systems
Specified quantities of slack bus are

 P and Q
 V and δ
 P and δ
 P and V

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Power Systems
The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base?

 0.25 pu
 0.4 pu
 0.1 pu
 0.2 pu

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Power Systems
String efficiency depends upon

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

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Power Systems
Which material is used in controlling chain reaction in a nuclear reactor

 Beryllium.
 Heavy water.
  Boron.
 Thorium.

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Power Systems
If the frequency is increased, then skin effect will

 increases
 decreases
 any of the above
 remains unaffected

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Power Systems
Inductance of transmission line will decrease when

 both GMD and GMR decrease
 both GMD and GMR increase
 GMD increase and GMR decrease
 GMD decrease and GMR increase

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