Transmission And Distribution Objective Type Questions and answers
21. The top-most conductor in a high transmission line is
A. Earth conductor
B. R-phase conductor
C. Y-phase conductor
D. B-phase conductor
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A. Earth conductor
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22. By which of the following methods voltage of transmission can be regulated?
A. Use of series capacitors of neutralise the effect of series reactance
B. Switching in shunt capacitors at the receiving end during heavy loads
C. Use of tap changing transformers
D. Any of the above methods
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23. Which of the following is the main advantage of AC transmission system over DC transmission system ?
A. Less instability problem
B. Less installation problems
C. Easy transformation
D. Less losses in transmission over long distances
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24. The effect of ice on transmission line conductors is to increase the
A. Transmission losses
B. Weight of the conductor
C. Tendency for corona
D. Resistance to flow of current
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25. if the height of transmission tower is increased
A. The line capacitance will decrease but line inductance will remain unchanged
B. The line capacitance and inductance will not change
C. The line capacitance will increase but line inductance will decrease
D. The line capacitance will decrease but line inductance will increase
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