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Power Systems

Power Systems
Length of short transmission line is up to

 40 km
 any of the above
 150 km
 80 km

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Power Systems
Which type of connection is employed for current transformers for the protection of delta- star connected 3-phase transformer?

 delta-delta
 star-star
 star-delta
 delta-star

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Power Systems
A power station has a maximum demand of 15 MW. The plant capacity is 20 MW. Find the reserve capacity of the plant?

 10 MW
 20 MW
 5 MW
 15 MW

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Power Systems
A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

 42°
 36°
 45°
 90°

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Power Systems
What should be the minimum depth (in metre)of cable trench to dug for laying of 1.1 kV?

  0.75.
 1.05.
 0.90.
 1.20.

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Power Systems
A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the numbers of pole are required in the generator

 16.
 6.
 12.
  24.

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