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Power Systems

Power Systems
Proximity effect is more in case of

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

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Power Systems
The conversion ratio of a breeder reactor is

  more than unity.
 none of above.
 less than unity.
  equal to unity.

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Power Systems
Transmission lines are transposed to reduce

 skin effect
 ferranti effect
 proximity effect
 interference with neighbouring communication lines

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Power Systems
If the fault is very nearer to the generator, the fault current is

 less
 any of the above
 zero
 larger

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Power Systems
A generator has a rating of 10 MVA, 5 kV has a reactance of 0.02 pu. Find the reactance at a new base values of 50 MVA, 10 kV?

 0.05
 0.02
 0.25
 0.025

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Power Systems
Which of the following is/are the effects of corona

 charging current increases
All of these
 power loss decreases
 interference decreases

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