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Power Systems

Power Systems
A 3-phase breaker is rated at 2000 MVA, 33 kV, its making current will be

 49 kVA.
  35 kVA.
 70 kVA.
  89.22 kVA.

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Power Systems
If the penalty factor of a plant is unity, its incremental transmission loss is

None of these
 1
 0
 -1

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Power Systems
Which of following are the fertile materials

 U238 and Pu239.
 U233 and Pu239.
  U238 and Th232.
 U238 and Th239.

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Power Systems
For 132 kV system, the reactance and capacitance up to the location of the CB is 3 Ω and 0.015 μF respectively. The maximum value of RRRV is

  9.01 kV / μs.
 2.0 kV / μs.
 10.01 kV / μs.
 12.2 kV / μs.

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Power Systems
The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by

 Zs = 0.5 pu, Zm =0.6 pu
 Zs = 0.2 pu, Zm =0.7 pu
 Zs = 0.7 pu, Zm =0.2 pu
 Zs = 0.6 pu, Zm =0.5 pu

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Power Systems
Stock bridge dampers are used to

 increase the sag
 reduce the vibrations at the point of support
All of these
 reduce the tension

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