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Economics of Power Generation

Economics of Power Generation
Large capacity generators are invariably

Forced air cooled
Hydrogen cooled
Water cooled
Natural air cooled

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Economics of Power Generation
______ is the reserved generating capacity available for service under emergency conditions which is not kept in operation but but in working order.

Hot reserve
Cold reserve
Spinning reserve
Firm power

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Economics of Power Generation
When the power factor improved, the kW capacity of alternator is

None of the listed here
Unaffected
Decreased
Increased

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Economics of Power Generation
During load shedding

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

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Economics of Power Generation
For a consumer most economical power factor is generally

0.5 lagging
0.5 leading
0.95 leading
0.95 lagging

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Economics of Power Generation
A low utilization factor for a plant indicates that

plant is used for stand by purpose only
plant is used for peak load as well as base load
plant is under maintenance
plant is used for base load only

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