Conductor | Transmission And Distribution Objective Type Questions and answers
11. In case of transmission line conductors with the increase in atmospheric temperature
A. Length decreases but stress increases
B. length increases but stress decreases
C. Both the length and stress increase
D. Both the length and stress decreases
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B. length increases but stress decreases
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12. By using bundle conductors, the critical voltage for the formation of corona will
A. Remain same
B. Decrease
C. Increase
D.Not occur
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13. When a live conductor of public electric supply breaks down and touches the earth which of the following will happen?
A. Current will flow to earth
B. Supply voltage will drop
C. Supply voltage will increase
D. No current will flow in the conductor
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14. The still used in steel cored to contactors is usually
A. Alloy steel
B. Stainless steel
C. Mild steel
D.High-speed steel
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15. For a 400 KV line, the spacing between phase conductors is around
A. 8 m
B. 11 m
C. 14 m
D. 20 m
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