A. Voltage level
B. Short circuit current
C. Radio interference in the communication line
D. All of the above
Answer: C. Radio interference in the communication line
Explanation:
Usually, telecommunication lines and power lines travel close to each other, then the current flowing through power line produces magnetic flux linkage between telecommunication lines so that voltage is induced in the telecommunication line which causes the disturbance in communication.
To reduce this effect t the conductors are transposed. Transposition can be made either to the power conductors or telephone (communication ) lines at regular intervals.
When conductors are not transposed at regular intervals, the inductance and capacitance of the conductors will not be equal.
When conductors such as power lines are run in parallel to transmission lines, there is a possibility of high voltages induced in the lines. This can result in acoustic shock or noise.
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