1. If the length of a cable is increased, its capacitance
(a) decreases.
(b) increases.
(c) remain same.
(d) none of the above.
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2. Low voltage cables are generally use up to
(a) 1.1kV.
(b) 3.3kV.
(c) 6.6kV.
(d) 11kV.
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3. Insulated conductor is called as
(a) wire
(b) conductor.
(c) pipe.
(d) cable.
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4. EHT cable are the types of
(a) Oil filled.
(b) Gas filled.
(c) Both of above.
(d) Air filled.
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5. The cables mainly used in hill / mines are
(a) MIND.
(b) XLPE.
(c) FRLS.
(d) LSOH.
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6. The operating voltage of high voltage cables is up to
(a) 11kV.
(b) 22kV.
(c) 33kV.
(d) 66kV.
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7. The operating voltage of supertension cables is up to
(a) 11 kV.
(b) 22 kV.
(c) 33 kV.
(d) 66 kV.
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8. The operating voltage of extra high tension cables is upto
(a) 11 kV.
(b) 33 kV.
(c) 66 kV.
(d) 132 kV.
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9. The charging current drawn by the cable
(a) leads the voltage by 120°.
(b) lags the voltage by 90°.
(c) lags the voltage by 120°.
(d) leads the voltage by 90°.
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10. As the length of cable decreases, insulation resistance will
(a) increases.
(b) decreases.
(c) remains unchanged.
(d) none of above.
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11. Insulation resistance of a cable is 1. directly proportional to its (a) length.
(b) inversely proportional to its length.
(c) remain constant.
(d) none of above.
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12. The bridge used for measurement of insulation cables
(a) Wien’s.
(b) Maxwell’s.
(c) Schering’s.
(d) Kelvin’s.
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13. Localization of cable faults done by
(a) short circuit tests.
(b) murray loop tests.
(c) varley loop tests.
(d) murray and varley loop test.
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14. The disadvantage with paper as insulating material is
(a) it is hygroscopic.
(b) it has high capacitance.
(c) it is an organic material.
(d) none of the above.
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