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Power Systems

Power Systems
Which one of following fuels is used by slow thermal nuclear reaction for power generation

  U235.
 U238.
 Th232.
 Pu239.

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Power Systems
Which of the following method is/are more reliable?

 Newton Raphson (NR) method
All of these
 Fast Decoupled Load Flow (FDLF) method
 Gauss-Siedel (GS) method

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Power Systems
The presence of earth in case of overhead lines

 decrease inducatance
 increase capacitance
 increase inductance
 decrease capacitance

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Power Systems
In a 400 kV power network, 360 kV is recorded at 400 kV bus. The reactive power absorbed by a shunt reactor for 50 MVAr, 400 kV connected at the bus is

 55.56 MVAr.
  40.5 MVAr.
 61.73 MVAr.
 45.0 MVAr.

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Power Systems
In kaplan runner, the number of blades is generally of the order of

 12 - 16.
  16 - 24.
 1 - 2.
  3 - 6.

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Power Systems
Counter poise is used for

 reduce losses
 proper discharging of lighting surges
 more surge impedance
 less surge impedance

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