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Economics of Power Generation

Economics of Power Generation
When the power factor is improved, the lagging kVAR drawn from the supply will

Remains same
None of the listed here
Decreases
Increase

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Economics of Power Generation
In Hopknison demand rate or two parttariff the demand rate or fixed charges are

dependent upon the energy consumed
dependent upon the maximum demand of the consumer
both (A) and (B)
neither (A) nor (B)

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Economics of Power Generation
Approximate estimation of power demand can be made by

Load survey method
Mathematical method
Statistical methods
All of the listed here

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Economics of Power Generation
When the power factor is unity, the relation between line currnet I and supply voltage V is

I is in phase with V
None of the listed here
I lags V by 90°
I leads V by 90°

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Economics of Power Generation
Arc and induction furnaces operate on

Very low leading p. f.
None of the listed here
Very Low lagging p. f.
Very high leading p. f.

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Economics of Power Generation
During load shedding

Some loads are switched off
System power factor is changed
System frequency is reduced
System voltage is reduced

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