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Question

In transmission system, the cost of lost energy is_________.

A.

Directly proportional to the square of current 

B.

Directly proportional to the square of voltage 

C.

Inversely proportional to the square of current 

D.

Inversely proportional to the square of voltage 

Answer ( Option D)

Inversely proportional to the square of voltage 

Solution

Total volume of conductor material required

Where,

 W = cost of loss energy

V = volume of conductor

v = voltage

So, the cost of lost energy is inversely proportional to square of voltage.

Hence, the correct option is (D).

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