Empire tape is__________?

Related Mcqs:

1. The surge resistance of cable is__________?

   A. 5 ohms
   B. 20 ohms
   C. 50 ohms
   D. 100 ohms

2. The insulating material for a cable should have__________?

   A. low cost
   B. high dielectric strength
   C. high mechanical strength
   D. all of the above

3. 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

4. Cables, generally used beyond 66 kV are___________?

   A. oil filled
   B. S.L. type
   C. belted
   D. armoured

5. In capacitance grading of cables we use a _______ dielectric?

   A. composite
   B. porous
   C. homogeneous
   D. hygroscopic

6. 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

7. If the length of a cable is doubled, its capacitance____________?

   A. becomes one-fourth
   B. becomes one-half
   C. becomes double
   D. remains unchanged

8. The insulating material should have____________?

   A. low permittivity
   B. high resistivity
   C. high dielectric strength
   D. all of the above

9. 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

10. In a cable the voltage stress is maximum at____________?

    A. sheath
    B. insulator
    E. surface of the conductor
    D. core of the conductor