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Power Systems

Power Systems
Peak load power plants is/are

 nuclear plants
 both 1 and 2
 pumped storage plant
 diesel plant

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Power Systems
Proximity effect depends on

 distance between the conductors
 relative permeability
 frequency
All of these

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Power Systems
If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line

 None of them.
 0.01 + j 0.02 per Km.
 0.018 per Km.
 0.09 + j 0.018 per Km.

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Power Systems
A 3 - Φ, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is

  35 kA.
 104.8 kA.
 3600 A.
 1200 A.

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Power Systems
If the time of operation of a relay for unity TMS is 10 sec. the time of operation of 0.5 TMS will be _______________ secs.

 20.
  5.
 7.
 3.

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Power Systems
When a transformer is loaded, the secondary terminal voltage gains. That means power factor is

 unity.
  leading.
 lagging.
 zero.

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