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Power Systems

Power Systems
Peak load power plants is/are

 nuclear plants
 both 1 and 2
 diesel plant
 pumped storage plant

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

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Power Systems
A transmission line has self and mutual impedances of 0.8 pu and 0.2 pu. Find the positive, negative and zero sequence impedances respectively?

 0.8, 0.8 and 1.2 pu
 0.6, 0.6 and 1.2 pu
 0.8, 0.6 and 1.2 pu
 0.6, 0.8 and 1.2 pu

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Power Systems
Characteristics of arc quenching medium is/are

 High thermal conductivity
 High dielectric strength
 Non flammable
All of these

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Power Systems
Lightning arresters are made up of which material?

 silicon oxide
 any of the above
 copper
 silver

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Power Systems
A CT is connected in ___________________ with the line.

  not connected.
  across.
  both A and B.
  series.

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