Question Booklet and Answer Key of Assistant Manager (Electrical) 2015 Exam by DMRC

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The thickness of the layer of insulation on the conductor, in cables, depends upon

(a) reactive power
(b) power factor
(c) voltage
(d) current carrying capacity

Empire tape is

(a) varnished cambric
(b) vulcanized rubber
(c) impregnated paper
(d) none of the above



















Ans: a

Which of the following insulation is used in cables ?

(a) Varnished cambric
(b) Rubber
(c) Paper
(d) Any of the above























Ans: d

Which of the following protects a cable against mechanical injury ?

(a) Bedding
(b) Sheath
(c) Armoring
(d) None of the above

























Ans: c

The insulating material for a cable should have

(a) low cost
(b) high dielectric strength
(c) high mechanical strength
(d) all of the above

Ans: d