Electrical Engineering : Cables QUESTIONS AND ANSWERS :: part2 : 1 to 5
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.The breakdown voltage of a cable depends on |
| presence of moisture |
| working temperature |
| time of application of the voltage |
| all of the above |
2.Is a cable is to be designed for use on 1000 kV, which insulation would you prefer ? |
| Polyvinyle chloride |
| Vulcanised rubber |
| Impregnated paper |
| Compressed SFe gas |
3.In cables the charging current |
| lags the voltage by 90� |
| leads the voltage by 90� |
| lags the voltage by 180� |
| leads the voltage by 180� |
4.The thickness of metallic shielding on cables is usually |
| 0.04 mm |
| 0.2 to 0.4 mm |
| 3 to 5 mm |
| 40 to 60 mm |
5.Underground cables are laid at sufficient depth |
| to minimise temperature stresses |
| to avoid being unearthed easily due to removal of soil |
| to minimise the effect of shocks and vibrations due to gassing vehicles, etc. |
| for all of the above reasons |
More Cables QUESTIONS AND ANSWERS available in next pages
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