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Power Systems

Power Systems
Ferranti effect occurs under

 full load
 no load
 half load
 any of the above

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Power Systems
The line currents of 3-phase supply are: IR = 3 + j 5 A IY =2 + j 2 A IB = -2 - j 1 A The zero sequence current will be

 5 + j 7 A
 -2 - j 1 A
 1 + j 4 A
 1 + j 2 A

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Power Systems
Zero sequence currents can flow from a line into a transformer bank if the windings are in

 delta / delta.
  ground star / delta.
 delta / star.
 star / grounded star.

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Power Systems
One fission of U235 releases energy of

 525 MeV.
 435 MeV.
  200 MeV.
 335 MeV.

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Power Systems
When a neutral point of 3 - Φ system is directly connected to earth then it has what type of grounding?

  Reactance.
  Peterson coil.
  Resistance.
  Solid.

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Power Systems
In a nuclear reator thermal energy is obtained from

  fission of radioactive material.
 burning of fuel rods in oxygen.
 fusion of radioactive material.
 all of above.

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