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Economics of Power Generation

Economics of Power Generation
For a power plant which of the following constitutes running cost?

All of the listed here
Cost of fuel
Cost of wages
Cost of lubricants

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Economics of Power Generation
During load shedding

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

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Economics of Power Generation
A load draws a power of 10 kW at a power factor of 0.707 lagging. The lagging kVAR drawn from the supply will be

20 kVAR
15kVAR
5 kVAR
10 kVAR

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Economics of Power Generation
A synchronous condenser improve p. f. by taking

Leading kVAR
Lagging kVAR
None of the listed here
Both leading and lagging kVAR

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

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

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Economics of Power Generation
Which of the following devices may be used to provide protection against lightening over voltages ?

Rod gaps
All of these
Surge absorbers
Horn gaps

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