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Power Systems

Power Systems
If the load is short circuited, then reflection coefficient of voltage is

 1
 -1
 -2
 0

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Power Systems
A 1- phase transmission line operating at 30 kV has radius of 1 cm and distance between conductors is 0.5 m. Assume m = δ =1, g = 21 kV/cm and frequency f = 50 Hz. Find the critical disruptive voltage?

 82.15 kV/phase
 41.075 kV/phase
 17.32 kV/phase
 34.64 kV/phase

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Power Systems
Among the following which is not non conventional energy

  Wind.
  Nuclear.
  Geothermal.
  Tidal.

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Power Systems
When a pumped storage power plant is operated in conjunction with a steam power plant

 chances of the tripping of the system decrease
 load factor of the steam plant is increased
All of these
 the operating cost of the steam plant become optimum

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Power Systems
Transmission lines are transposed to reduce

 proximity effect
 skin effect
 interference with neighbouring communication lines
 ferranti effect

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

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

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