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Power Systems

Power Systems
Specified quantities of slack bus are

 P and Q
 P and δ
 P and V
 V and δ

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Power Systems
String efficiency depends upon

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

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Power Systems
Two identical synchronous machines having same inertia constant are connected in parallel and swinging together. The effective inertia constant is 4 MJ/MVA. Then each machine has inertia constant of

 16 MJ/MVA
 2 MJ/MVA
 8 MJ/MVA
 4 MJ/MVA

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Power Systems
Bonding is done at the both ends of the cable to reduce the

 iron loss
 copper loss
 sheath loss
None of these

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Power Systems
A power station supplies the peak load of 50 MW, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55 the maximum demand on the station and average load respectively will be

 53 MW.
 52 MW.
  51.61 MW.
 57.5 MW.

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Power Systems
Under over excitation synchronous phase modifier works as

 series capacitor
 shunt capacitor
 shunt reactor
 any of the above

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