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Power Systems

Power Systems
Proximity effect is more in case of

 over head lines
None of these
 same in both cases
 power cables

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Power Systems
Which of the following statements is/are true? Due to corona,

All of these
 charging current increases
 interference increases
 power loss increases

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Power Systems
Which of the following will take least time in starting from cold condition to full load operation

 Thermal power plant.
 Nuclear power plant.
  Hydro electric power plant.
 Gas turbine plant.

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Power Systems
Critical mass of the fuel is the amount required to make the multiplication factor

  equal to factor.
 0.5.
 less than 1.
 more than 1.

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Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the incident current?

 2500 A
 250 A
 200 A
 100 A

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

 LLG
 LL
 LG
 LLL

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