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Economics of Power Generation

Economics of Power Generation
A load takes a current of I at a p. f. Of cos Ф. The wattless component of current is

I tan Ф
I cos Ф
I sin Ф
None of the listed here

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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

1.57 W
1.25 W
0.8 W
2 W

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Economics of Power Generation
The connected load of a IVMIM uir consumer is around

40 kV
120 kW
80 kW
5 kW

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Economics of Power Generation
An over excited synchronous motor on noload is known as

alternator
induction motor
synchronous condenser
generator

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Economics of Power Generation
Approximate estimation of power demand can be made by

All of the listed here
Statistical methods
Load survey method
Mathematical method

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Economics of Power Generation
The connected load of a domestic consumer is around

40 kW
120 kW
80 kW
5 kW

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