If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be
A. 5 kV/mm
B. 10 kV/mm
C. 15 kV/mm
D. 30 kV/mm
Answer: Option B
A. 5 kV/mm
B. 10 kV/mm
C. 15 kV/mm
D. 30 kV/mm
Answer: Option B
The insulating material for a cable should have
A. Low cost
B. High dielectric strength
C. High mechanical strength
D. All of the above
Underground cables are laid at sufficient depth
A. To minimize 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
Plz give a solution