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Economics of Power Generation

Economics of Power Generation
The expected useful life of an hydroelectric power station is around

60 years
15 years
100 years
30 years

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Economics of Power Generation
During load shedding

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

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Economics of Power Generation
The power transformer is usually rated in

kVAR
kVA
kW
kWh

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Economics of Power Generation
The only motor that can be worked at leading power factor is

3-phase induction motor
1- phase induction motor
None of the listed here
Synchronous motor

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Economics of Power Generation
Generators for peak load plants are usually designed for maximum efficiency at

50 to 75 % percent full load
Full load
25 percent overload
25 to 50 % percent full load

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Economics of Power Generation
Load factor of a power station is defined as

(average load x maximum demand)172
average load x maximum demand
average load/maximum demand
maximum demand/average load

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MORE MCQ ON Economics of Power Generation

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