Electrical Engineering : Cables QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.If a power cable and a communication cable are to run parallel the minimum distance between the two, to avoid interference, should be |
| 2 cm |
| 10 cm |
| 50 cm |
| 400 cm |
17.The advantage of cables over overhead transmission lines is |
| easy maintenance |
| low cost |
| can be used in congested areas |
| can be used in high voltage circuits |
18.The insulating material should have |
| low permittivity |
| high resistivity |
| high dielectric strength |
| all of the above |
19.Solid type cables are considered unreliable beyond 66 kV because |
| insulation may melt due to higher temperature |
| skin effect dominates on the conduc�tor |
| of corona loss between conductor and sheath material |
| there is a danger of breakdown of insulation due to the presence of voids |
20.In a cable the voltage stress is maximum at |
| sheath |
| insulator |
| surface of the conductor |
| core of the conductor |
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