In single core cables armouring is not done to________?

A. 200 V
B. 500 V
C. 700 V
D. 1000 V

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

A. insulation layer
B. sheath
C. armour
D. conductor surface

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

A. Yes
B. No

A. blue
B. black
C. brown
D. none of the above