1) What should be the minimum insulation resistance of a 11 kV line when tested with a 1000 v Megger?
a. 10 kV
b. 50 kV
c. 33 kV
d. 120 kV
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Answer
Explanation
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ANSWER: 50 kV
Explanation:
No explanation is available for this question!
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2) What is the angle between the pole and stay?
a. 30 °
b. 45 °
c. 60 °
d. 10 °
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Answer
Explanation
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ANSWER: 30 °
Explanation:
No explanation is available for this question!
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3) For what voltage is the H type of poles used?
a. 22 kV
b. 130 kV
c. 11 kV
d. All of these
e. None of these
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Answer
Explanation
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ANSWER: 130 kV
Explanation:
No explanation is available for this question!
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4) Which test(s) is / are conducted after completion of erection of 11 kV line but before energisation of lines?
a. Conductor continuity tests
b. Earth resistance tests
c. Insulation resistance tests
d. Both (a) & (c)
e. All of these
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Answer
Explanation
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ANSWER: All of these
Explanation:
No explanation is available for this question!
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5) What is the empirical formula employed for the determination of spacing of conductors in case of aluminium conductors?
a. √S + V / 100
b. √S + 120 / V
c. √S + V / 150
d. √S + V / 1 kV
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Answer
Explanation
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ANSWER: √S + V / 150
Explanation:
No explanation is available for this question!
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6) What should be the spacing between the two conductors if the working voltage is 11 kV?
a. 76 mm
b. 101 mm
c. 190 mm
d. 250 mm
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Answer
Explanation
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ANSWER: 101 mm
Explanation:
No explanation is available for this question!
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7) Steel rail poles of height 13 meters are used for transmission purpose of _________ voltage.
a. 33 kV
b. 11 kV
c. 22 kV
d. Both (a) & (b)
e. All of these
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Answer
Explanation
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ANSWER: 33 kV
Explanation:
No explanation is available for this question!
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8) To prevent the decaying owing to snow and rain, the wooden poles are protected by _____________ cap at the top.
a. Aluminium
b. Zinc
c. Cement
d. All of these
e. None of these
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Answer
Explanation
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ANSWER: All of these
Explanation:
No explanation is available for this question!
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9) What is the maximum span upto which the wooden poles can be used?
a. 20 m
b. 50 m
c. 60 m
d. 100 m
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Answer
Explanation
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ANSWER: 60 m
Explanation:
No explanation is available for this question!
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10) Which among these is a part of distribution system?
a. Feeders
b. Distributors
c. Service mains
d. All of these
e. None of these
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Answer
Explanation
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ANSWER: All of these
Explanation:
No explanation is available for this question!
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