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Power Systems

Power Systems
Which of following materials can be used as coolant

 CO2.
  Any of above.
 Helium.
 Heavy water.

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Power Systems
Maximum power capacity of a transmission line can be increased by

 nether 1 nor 2
 either 1 or 2
 increasing voltage level
 decreasing reactance value

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Power Systems
The ratio of reset to pick up current for an induction cup relay is approximately

  0.99.
 1.0.
 1.35.
 0.75.

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Power Systems
Transmission line parameters of the short transmission line are

 1,0,Y,1
 Z,0,Y,1
 1,Z,0,1
 1,Z,Y,1

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Power Systems
MCB stands for

  molded circuit breaker.
  miniature circuit breaker.
  maximum capacity breaker.
  minimum capacity breaker.

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Power Systems
Incremental cost of two generators Ic1 = 0.2 P1+60, Ic2 = 0.3 P2+40 and the ratings of the generator are 150 and 250 MW. Find the load sharing of each generator for a load of 200 MW?

 P1 = 80 MW, P2 = 120 MW
 P1 = 100 MW, P2 = 100 MW
 P1 = 60 MW, P2 = 140 MW
 P1 = 120 MW, P2 = 80 MW

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