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Power Systems

Power Systems
The average thermal efficiency of a modern nuclear power plant is about

 40 %.
 60 %.
  30 %.
 80 %.

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Power Systems
Maximum power transfer in a transmission line can be obtained by

 either 1 or 2
None of these
 increasing voltage level
 reducing reactance

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Power Systems
The ground capacitance existing between transmission line and ground is 4µF. Find the inductive reactance of the peterson coil for compensation of arcing grounds?

 625.35 Ω
 265.25 Ω
 855.26 Ω
 0.844 Ω

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Power Systems
A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

 0.2 pu
 1.375 pu
 2.4 pu
 3.975 pu

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Power Systems
The power generated by two plants are; P1 = 50 MW, P2 = 40 MW. If the loss coefficients are B11 = 0.001, B22 = 0.0025 and B12 = -0.0005, then power loss will be

 8.5 MW
 6.5 MW
 5.5 MW
 4.5 MW

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Power Systems
Nuclear fission means

  moderator.
  graphite.
  breaking up of nuclear of heavy atoms into nearly equal parts.
  combination of two light nuclei.

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