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Electrical Cables MCQs
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Electrical Cables MCQs
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25 Questions

1. The breakdown of insulation of the cable can be avoided economically by the use of
2. Cables, generally used beyond 66 kV are
3. Low tension cables are generally used up to
4. A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become
5. Which of the following protects a cable against mechanical injury?
6. If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be
7. In case of three core flexible cable the colour of the neutral is
8. Copper as conductor for cables is used as
9. The advantage of oil filled cables is
10. PVC stands for
11. The insulation of the cable decreases with
12. The material for armouring on cable is usually
13. Natural rubber is obtained from milky sap of tropical trees.
14. Cables for 220 kV lines are invariably
15. Capacitance grading of cable implies
16. Rubber is most commonly used insulation in cables.
17. cables are used for 132 kV lines.
18. If the length of a cable is doubled, its capacitance
19. In a cable immediately above metallic sheath ________ is provided.
20. The bedding on a cable consists of
21. The insulating material should have
22. In single core cables armouring is not done to
23. Empire tape is
24. The thickness of metallic shielding on cables is usually
25. In the cables, sheaths are used to

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