Cables, generally used beyond 66 kV are___________?
Cables, generally used beyond 66 kV are___________? A. oil filled B. S.L. type C. belted D. armoured
Cables, generally used beyond 66 kV are___________? A. oil filled B. S.L. type C. belted D. armoured
Low tension cables are generally used up to___________? A. 200 V B. 500 V C. 700 VD. 1000 V
High tension cables are generally used up to_____________? A. 11kV B. 33kV C. 66 kV D. 132 kV
Dielectric strength of rubber is around____________? A. 5 kV/mm B. 15 kV/mmC. 30 kV/mm D. 200 kV/mm
In a cable, the maximum stress under operating conditions is at___________? A. insulation layer B. sheath C. armourD. conductor surface
In case of three core flexible cable the colour of the neutral is_________? A. blue B. black C. brown D. none 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
The insulating material for cables should____________? A. be acid proof B. be non-inflammable C. be non-hygroscopicD. have all above properties
The current carrying capacity of cables in D.C. is more than that in A.C. mainly due to__________? A. absence of harmonics B. non-existence of any stability limitC. smaller dielectric loss D. absence of ripples E. none of the above
cables are used for 132 kV lines____________? A. High tension B. Super tension C. Extra high tensionD. Extra super voltage