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Economics of Power Generation

Economics of Power Generation
A synchronous condenser improve p. f. by taking

None of the listed here
Leading kVAR
Lagging kVAR
Both leading and lagging kVAR

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Economics of Power Generation
The main reason for low power factor of supply statem is due to the use of

Synchronous motors
Resistive load
All correct
Induction morors

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

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Economics of Power Generation
________ is invariably used for peak load

Nuclear power plant
None of these
Steam turbine plant
Pumped storage plant

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Economics of Power Generation
The fixed cost of energy generated

Indepemdent of max demand and units generated
None of the listed here
Depends on maximum demand
Depends on units generated

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Economics of Power Generation
The expected useful life of an hydroelectric power station is around

15 years
60 years
30 years
100 years

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