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Power Systems

Power Systems
Find the value of a729, where "a" is the operator

 0
 α²
 α
 1

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Power Systems
What will be the ratio of the C.T. on the H.V side of a 3 - φ star / delta 33 / 11 kV transformer if the protecting CT on the LV side has a ratio of 300 : 5 ?

  200 : 5 / √3.
 120 : 6 / √3.
  100 : 5 / √3.
 150 : 4 / √3.

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Power Systems
In a two plant system, the load is connected to plant number 2. The loss coefficients are

 B11,B22,B12 are non zeros
 B11,B22 are non zero,B12 = 0
 B11 is non zero,B22 = B12 = 0
 B11,B12 are non zero ,B22 = 0

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Power Systems
Which of the following is not a secondary nuclear fuel

 Pu239.
  U235.
 None of above.
 U233.

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Power Systems
For variable heads of near about but less than 30 m, which type of turbines is used hydro power plant

  Kaplan.
 Francis.
 Pelton.
 None of above.

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

 LLG
 LL
 LLL
 LG

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