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Transmission & Distribution

Transmission & Distribution
By using bundle conductors, the critical voltage for the formation of corona will

Increase
Remains same
Not occur
Decrease

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Transmission & Distribution
Which of the following is the source of heat generation in the cables?

All of these
Losses in the metallic sheathings and armourings
Dielectric losses in cable insulation
losses in the conductor

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Transmission & Distribution
In a D.C. 3-wire distribution system, balancer fields are cross-connected in order to

make both machine^ run as unloaded motors
balance loads on both sides of the neutral
equalize voltages on the positive and negative outers
boost the generated voltage

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

High
All
Low
Audio

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Transmission & Distribution
The following system is not generally used

1-phase 4-wire
3-phase 4-wire
3-phase 3-wire
1-phase 3-wire

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Transmission & Distribution
Basically the boosters are

Transformers
Synchronous motors
Inductors
Capacitors

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