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Transmission & Distribution

Transmission & Distribution
With the increase in the values of voltage and power factor, the cost of transmission line conductor

Increases exponentals
Decreases
Is unaffected
Increases

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Transmission & Distribution
The underground system cannot be operated above

440 V
33 V
66 V
11 V

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Transmission & Distribution
When a conductor carries more current on the surface as compared to core, it is due to

Corona
Permeability variation
Skin effect
Unsymmetrical fault

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Transmission & Distribution
Skin effect is noticeable only at _____ frequencies.

Audio
All
High
Low

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Transmission & Distribution
Which of the following faults is most likely to occur in cables?

Open circuit fault
Cross or short-circuit fault
All of these
Breakdown of cable insulation

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Transmission & Distribution
When the load at the receiving end of a long transmission line is removed, the sending end voltage. This effect is known as

Skin effect
Proximity effect
Kelvin effect
Ferranti effect

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