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ECONOMICS OF POWER GENERATION

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

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

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Economics of Power Generation
In a 3 phase system, the line losses are W at a p. f. Of 1 . If the power factor becomes 0.8 lagging, the losses will becomes

0.8 W
1.25 W
1.57 W
2 W

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

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

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Economics of Power Generation
The main reason for low power factor of supply statem is due to the use of

Synchronous motors
Resistive load
All correct
Induction morors

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Economics of Power Generation
An over excites synchronous motor on no load is called

Induction motor
Synchronous condenser
Universal motor
Alternator

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