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Economics of Power Generation

Economics of Power Generation
Which of the following is not a method for estimating depreciation charges?

Sinking fund method
Halsey
Straight line method
Diminishing value method

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Economics of Power Generation
The correct relation in the following is :

kVAR = kW tan Ф
kVAR = kW cos Ф
Not listed here
kVAR = kW Sin Ф

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Economics of Power Generation
In a 3 phase system, the line losses are W at a p. f. Of 1 . If the power factor becomes 0.8 lagging, the losses will becomes

1.25 W
2 W
1.57 W
0.8 W

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Economics of Power Generation
Load shedding is done to

Improve power factor
Run the equipment efficiency
Reduce peak demand
Repair the machine

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

Air
Hydrogen
Nitrogen
Oxygen

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Economics of Power Generation
In the diminishing value method for calculating depreciation, the annual depreciation charge is independent of

The rate of interest
Scrap value
Initial value of equipment
Useful life of equipment

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