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Economics of Power Generation

Economics of Power Generation
Alternators and transformers are rated in

kW
None of the listed here
kVAR
kVA

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Economics of Power Generation
Load curve helps in deciding

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

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

Unity
0.8 lag
0.75 lag
O. 8 lead

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

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

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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 in working order,

Hot reserve
Spinning reserve
Firm power
Cold reserve

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Economics of Power Generation
A load drwas active power(P), apparent power(S) and reactive power (Q) from the line. The power factor of the load is

P/S
S/P
P/Q
Q/P

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