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Economics of Power Generation

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

Resistive load
All correct
Synchronous motors
Induction morors

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

Hydroelectric
Diesel
Nuclear
Any of the above
Steam

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Economics of Power Generation
For a diesel generating station the useful life is expected to be around

20 to 50 years
15 to 20 years
50 to 75 years
75 to 100 years

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Economics of Power Generation
A load takes a current of I at a p. f. Of cos Ф. The wattless component of current is

None of the listed here
I cos Ф
I sin Ф
I tan Ф

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Economics of Power Generation
Alternators and transformers are rated in

kW
None of the listed here
kVA
kVAR

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Economics of Power Generation
A 130 MW generator is usually ____ cooled.

Air
Hydrogen
Oxygen
Nitrogen

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