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Economics of Power Generation

Economics of Power Generation
________ will be least affected due to charge in supply voltage frequency.

Room heater
Mixer grinder
Ceiling fan
Electric clock

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

Resistive load
All correct
Induction morors
Synchronous motors

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

Depreciation
Insurance charges
Fuel cost
Interest on capital

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Economics of Power Generation
Annual depreciation of the plant it proportional to the earning capacity of the plant vide

straight line depreciation
sinking fund depreciation
reducing balances depreciation
None of these

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Economics of Power Generation
By the use of which of the following power factor can be improved?

Static capacitors
Any of the listed here
Phase advancers
Synchronous compensators

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Economics of Power Generation
An ideal value of power factor is

0.8
0.5
0.75
1

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