Power Systems - Interview Questions | Exam2Win

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66. The function of the earth wire in an extra high voltage line is to

A. prevent earth fault

B. provide a safety measure for any high-flying object

C. provide a shield to the phase con-ductors from direct lightning stroke

D. provide mechanical strength to the towers

Explanation:

67. Which one of the following statement. is not correct for the use of bundled conductors in transmission lines?

A. Control of voltage gradient

B. Reduction in corona 1088

C. Reduction in radio interference

D. Increase in interference with communication lines

Explanation:

68. A loss less line terminated with its surge impedance has

A. flat voltage profile

B. transmission line angle is greater than actual length of line

C. transmission line agnle is less than the actual length

D. both (a) and (b) above

Explanation:

69. With 100 % inductive shunt compensation, the voltage profile is flat for

A. 100 % loading of line

B. 50 % loading of line

C. zero loading of line

D. none of the above

Explanation:

70. If a line is 100 % series compensated it may result into series resonance at power frequency of

A. 50 Hz

B. 150 Hz

C. 100 Hz

D. none of the above

Explanation: