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Economics of Power Generation

Economics of Power Generation
Alternators and transformers are rated in

kW
kVA
None of the listed here
kVAR

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Economics of Power Generation
The power transformer is usually rated in

kW
kVAR
kWh
kVA

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Economics of Power Generation
In a power plant if the maximum demand on the plant is equal to the plant capacity, then

Load factor will be nearly 60%
Plant reserve capacity will be zero
Load factor will be unity
Diversity factor will be unity

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

Ceiling fan
Room heater
Mixer grinder
Electric clock

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Economics of Power Generation
The load factor of domestic load is usually

50 to 60%
10 to 15%
30 to 40%
60 to 70%

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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

0.8 W
1.57 W
2 W
1.25 W

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