a) Prevent moisture from entering the cable b) Increase the strength of the cable c) Provide adequate insulation d) None of these Ans: (a)
a) Decreases the line losses b) Increases the line losses c) Does not effect the line losses d) None of these Ans: (b)
a) Phase wire b) Earth wire c) Neutral wire d) Any of these Ans: (b)
a) Jumpers b) Poles c) Conductors d) Insulators Ans: (c)
a) Reducing the number of strings in the insulator b) Increasing the number of strings in the insulator c) Correct grading of insulators of various capacities d) None of these Ans: (c)
a) Increases b) Decreases c) Remains unaltered d) May increases or decrease Ans: (a)
a) Increases its tensile strength b) Increase its conductivity c) Reduce the cost d) Make it easy to handle Ans: (a)
a) 7% b) 21% c) 14% d) 28% Ans: (b)
a) VϜn/VϜ1 b) n VϜ1/VϜn c) VFn/( nVϜ1) d) VϜ1/ VϜn Ans: (c)
a) Almost the same voltage b) Higher voltage c) Lower voltage d) None of these Ans: (c)