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Power Systems

Power Systems
In which of the following given faults, all the sequence currents are equal?

 LG
 LLG
 LLL
 LL

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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.
 0.09 + j 0.018 per Km.
 0.018 per Km.
 0.01 + j 0.02 per Km.

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Power Systems
The function of draft tube is reaction turbine is to

 reduce water hammer.
 all of above.
 increase flow rate of water.
  convert kinetic energy of water.

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Power Systems
If the diameter of the conductor is increased

 the inductance is increased
 the resistance is increased
 the inductance is decreased
 no change in inductance and resistance

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Power Systems
MCB stands for

  molded circuit breaker.
  maximum capacity breaker.
  minimum capacity breaker.
  miniature circuit breaker.

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Power Systems
The insulation of modern EHV is designed based on

 lightning voltage.
  switching voltage.
 corona.
 RI.

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