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If the transmission voltage of a line increase, then the volume of the conductor material required:
1. decreases
2. increase but with huge losses in line
3. increases but without huge losses in line
4. does not change

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Correct Answer - Option 1 : decreases

Advantages of high transmission voltage:

1. Reduces the volume of conductor material

The volume of conductor material required is inversely proportional to the square of transmission voltage and power factor. The greater the transmission voltage, the lesser is the conductor material required.

2. Increases transmission efficiency

Transmission efficiency increases when the line voltage is increased.

3. Decreases percentage line drop

Percentage line drop decreases when the transmission voltage increases.

Important Points:

Limitations of high transmission voltage:

1. The increased cost of insulating the conductors

2. The increased cost of transformers, switchgear and other terminal apparatus

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