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Economics of Power Generation

Economics of Power Generation
A load drwas active power(P), apparent power(S) and reactive power (Q) from the line. The power factor of the load is

P/S
S/P
P/Q
Q/P

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Economics of Power Generation
The fixed cost of energy generated

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

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Economics of Power Generation
Which of the following, in a thermal power plant, is not a fixed cost?

Interest on capital
Fuel cost
Insurance charges
Depreciation

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

Remains same
None of the listed here
Decrease
Increase

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

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

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Economics of Power Generation
Load factor of a power station is defined as

(average load x maximum demand)172
average load x maximum demand
average load/maximum demand
maximum demand/average load

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