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Electrical Engineering - Transmission And Distribution MCQs
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Electrical Engineering - Transmission And Distribution MCQs
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25 Questions

1. The thickness of metallic shielding on cables is usually
2. In the cables, the location of fault is usually found out by comparing
3. The minimum dielectric stress in a cable is at
4. Copper as conductor for cables is used as
5. If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be
6. The breakdown voltage of a cable depends on
7. The relative permittivity of rubber is
8. The insulating material for cables should
9. Underground cables are laid at sufficient depth
10. Pressure cables are generally not used beyond
11. cables are used for 132 kV lines.
12. A cable carrying alternating current has
13. Conduit pipes are normally used to protect _____ cables.
14. In case of three core flexible cable the colour of the neutral is
15. PVC stands for
16. 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
17. Which of the following insulation is used in cables ?
18. Dielectric strength of rubber is around
19. Polyethylene has very poor dielectric and ageing properties.
20. The bedding on a cable consists of
21. The metallic sheath may be made of lead or lead alloy or of aluminium.
22. In a cable immediately above metallic sheath _____ is provided.
23. The insulating material for a cable should have
24. Cables, generally used beyond 66 kV are
25. If a power cable and a communication cable are to run parallel the minimum distance between the two, to avoid interference, should be