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Cables QUESTIONS AND ANSWERS

Electrical Engineering : Cables QUESTIONS AND ANSWERS :: part2 : 11 to 15

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.If the length of a cable is doubled, its capacitance

becomes one-fourth

becomes one-half

becomes double

remains unchanged

12.Cables for 220 kV lines are invariably

mica insulated

paper insulated

compressed oil or compressed gas insulated

rubber insulated

13.A cable carrying alternating current has

hysteresis losses only

hysteresis and leakage losses only

hysteresis, leakage and copper losses only

hysteresis, leakage, copper and friction losses

14.A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become

one half

double

four times

none of the above

15.The advantage of oil filled cables is

more perfect impregnation

smaller overall size

no ionisation, oxidation and formation of voids

all of the above

More Cables QUESTIONS AND ANSWERS available in next pages