Dielectric strength of rubber is around____________?

A. prevent the moisture from entering the cable
B. provide enough strength
E. provide proper insulation
D. none of the above

A. more perfect impregnation
B. smaller overall size
C. no ionisation, oxidation and formation of voids
D. all of the above

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

A. varnished cambric
B. vulcanised rubber
C. impregnated paper
D. none of the above

A. minimize the stress
B. avoid the requirement of good insulation
C. provide proper stress distribution
D. none of the above

A. hysteresis losses only
B. hysteresis and leakage losses only
C. hysteresis, leakage and copper losses only
D. hysteresis, leakage, copper and friction losses