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Economics of Power Generation

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

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

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

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

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

Ceiling fan
Mixer grinder
Room heater
Electric clock

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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

0.75 lag
Unity
0.8 lag
O. 8 lead

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Economics of Power Generation
In a 3 phase system, the line losses are

Directly proportional to cos Ф
Invesely proportional tocos Ф
None of the listed here
Inversely proportional to cos²Ф

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Economics of Power Generation
An ideal value of power factor is

0.75
0.8
1
0.5

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