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Power Systems

Power Systems
Corona loss is ----------------- on hilly areas than as plain areas.

 remain same
None of these
 less
 more

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Power Systems
If the diameter of the conductor is increased

 the resistance is increased
 the inductance is increased
 no change in inductance and resistance
 the inductance is decreased

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Power Systems
Differential relays does not used for which of the following faults?

 faults within a transformer
 faults within a generator
 both 1 and 2
 through faults

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Power Systems
The internal flux linkage due to internal flux of a conductor is

 I/2*10-7 wb-T/m
 I/4*10-7 wb-T/m
 I/6*10-7 wb-T/m
All of these

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Power Systems
Installation of capacitors at suitable locations and of optimum size in a distribution system results in

 reduction of KVA rating of distribution transformers
 reduction in distribution power loss
 improved voltage regulation
All of these

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Power Systems
The line currents of 3-phase supply are: IR = 3 + j 5 A IY =2 + j 2 A IB = -2 - j 1 A The zero sequence current will be

 5 + j 7 A
 1 + j 4 A
 1 + j 2 A
 -2 - j 1 A

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