A. varnished cambric
B. vulcanised rubber
C. impregnated paper
D. none of the above
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Related Mcqs:
- The surge resistance of cable is__________?
- A. 5 ohms B. 20 ohms C. 50 ohms D. 100 ohms...
- The insulating material for a cable should have__________?
- A. low cost B. high dielectric strength C. high mechanical strength D. all of the above...
- In single core cables armouring is not done to________?
- A. avoid excessive sheath losses B. make it flexible C. either of the above D. none of the above...
- Cables, generally used beyond 66 kV are___________?
- A. oil filled B. S.L. type C. belted D. armoured...
- In capacitance grading of cables we use a _______ dielectric?
- A. composite B. porous C. homogeneous D. hygroscopic...
- Solid type cables are considered unreliable beyond 66 kV because___________?
- A. insulation may melt due to higher temperature B. skin effect dominates on the conductor C. of corona loss between conductor and sheath material D. there is a danger of breakdown of insulation due to the presence of voids...
- If the length of a cable is doubled, its capacitance____________?
- A. becomes one-fourth B. becomes one-half C. becomes double D. remains unchanged...
- The insulating material should have____________?
- A. low permittivity B. high resistivity C. high dielectric strength D. all of the above...
- The thickness of metallic shielding on cables is usually_______________?
- A. 0.04 mm B. 0.2 to 0.4 mm E. 3 to 5 mm D. 40 to 60 mm...
- In a cable the voltage stress is maximum at____________?
- A. sheath B. insulator E. surface of the conductor D. core of the conductor...
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