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Economics of Power Generation

Economics of Power Generation
For given active power and voltage, the current drawn is minimum when the value of power factor is

Unity
O. 8 lead
0.8 lag
0.75 lag

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Economics of Power Generation
The annual deposit is _____ in sinking fund method as compared to straight line method.

None of the listed here
Smaller
Greater
The same

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Economics of Power Generation
Which of the following is an advantage of static capacitor for power factor improvement?

Little maintenance cost
All of the listed here
Ease in installation
Low losses

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Economics of Power Generation
Large capacity generators are invariably

Hydrogen cooled
Forced air cooled
Natural air cooled
Water cooled

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

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

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Economics of Power Generation
When the power factor of generating station is improved, the cost per unit

Decreases
Increases
None of the listed here
Remains same

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