A. Yes
B. No
Related Mcqs:
- The advantage of oil filled cables is_________?
A. more perfect impregnation
B. smaller overall size
C. no ionisation, oxidation and formation of voids
D. all of the above - Which of the following protects a cable against mechanical injury___________?
A. Bedding
B. Sheath
C. Armouring
D. None of the above - The insulating material for cables should____________?
A. be acid proof
B. be non-inflammable
C. be non-hygroscopic
D. have all above properties - 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 - 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_____________?
A. one half
B. double
C. four times
D. none of the above - If the length of a cable is doubled, its capacitance____________?
A. becomes one-fourth
B. becomes one-half
C. becomes double
D. remains unchanged - In congested areas where excavation is expensive and inconvenient ‘draw in system’ of laying of underground cables is often adopted
A. Yes
B. No - Underground cables are laid at sufficient depth___________?
A. to minimise temperature stresses
B. to avoid being unearthed easily due to removal of soil
C. to minimize the effect of shocks and vibrations due to gassing vehicles, etc
D. for all of the above reasons - In a cable the voltage stress is maximum at____________?
A. sheath
B. insulator
E. surface of the conductor
D. core of the conductor
