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Economics of Power Generation

Economics of Power Generation
Generating capacity connected to the bus bars and ready to take load when switched on is known as

cold reserve
hot reserve
firm power
spinning reserve

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Economics of Power Generation
When power factor is improved, the lagging kVAR drawn from the supply will

Decrease
Increase
Remains same
None of the listed here

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Economics of Power Generation
Load curve helps in deciding

sizes of the generating units
total installed capacity of the plant
all of the listed here
operating schedule of generating units

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Economics of Power Generation
If C is the capacitance per phase for delta connected capacitor bank, then capacitance per phase for star connected the capacitor bank is

C/3
3C
C/√3
√3C

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

1
0.75 lagging
0.6 lagging
0.95 lagging

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Economics of Power Generation
Load factor for heavy industries may be taken as

50 to 70%
25 to 40%
10 to 20 %
70 to 80%

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