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Economics of Power Generation

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

Depreciation
Interest on capital
Insurance charges
Fuel cost

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Economics of Power Generation
During load shedding

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

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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

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

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Economics of Power Generation
Depreciation charge are high in case of

Diesel plant
Thermal plant
Hydroelectric plant
Diesel plant

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Economics of Power Generation
Low power factor is usually not due to

Arc lamps
Induction motors
Incandescent lamp
Fluorescent tubes

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Economics of Power Generation
With reference to a power station which of the following is not a fixed cost?

Interest on capital
Depreciation
Insurance charges
Fuel cost

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