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Transmission & Distribution

Transmission & Distribution
The wooden poles well impregnated with creosote oil or any preservative compound has life

60 to 70 years
10 to 15 years
25 to 30 years
From 2 to 5 years

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

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

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Transmission & Distribution
In a 3- phase balanced load, each phase has

Same p. f. But different impedance
None of the listed here
Same impedance but different p. f
Same impedance and p. f.

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Transmission & Distribution
A line from which the loads are tapped off is called

Distributor
Service mains
Feeder
None of the listed here

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Transmission & Distribution
Corona result in

Power factor improvement
Better regulation
Radio frequency
None of the listed here

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Transmission & Distribution
The radial system of power distribution is used for

Both short and long distances
Long distances only
Short distances only
None of the listed here

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