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Transmission & Distribution

Transmission & Distribution
On which of the following does the size of a feeder depend?

Voltage
Voltage drop
Current carrying capacity
Frequency

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Transmission & Distribution
Power system stability is least affected by

Reactance of generator
Reactance of transmission line
Losses
Input torque

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

Low
All
High
Audio

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Transmission & Distribution
The effect of wind pressure is more predominant on

Neutral wires
Insulators
Supporting towers
Transmission lines

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Transmission & Distribution
Impedance relay is used on _____ transmission lines.

Short
Long
Medium
All

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Transmission & Distribution
If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as

Kelvin's law
Faraday's law
Ohm's law
Kirchhoff's law

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