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Economics of Power Generation

Economics of Power Generation
When the power factor is increased

Active power decreases
Line current increases
Line current decreases
Active power increases

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

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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

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

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Economics of Power Generation
power plant cannot have single unit of 100 MW.

Hydroelectric
Any of the above
Steam
Diesel
Nuclear

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Economics of Power Generation
Generators for peak load plants are usually designed for maximum efficiency at

50 to 75 % percent full load
25 to 50 % percent full load
25 percent overload
Full load

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Economics of Power Generation
For a large installation, it is better to apply

Bulk correction to large motors
Individual correction to small motors
None of the listed here
Individual correction to large motors

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