Underground Cable MCQ

51. Core is insulated by _________ in a belted cable.

  1. Impregnated paper
  2. VIR
  3. PVC
  4. Gutta percha

Answer. a

52. Screened cables can be used for voltages.

  1. Upto 11 kV
  2. 11 kV to 33 kV
  3. 33 kV to 66 kV
  4. 66 kV to 132 kV

Answer. c

53. The most commonly used insulation for cables in the low voltage to 33 kV range is

  1. Paper insulation
  2. Cross linked polyethylene
  3. Vulcanized India rubber
  4. Polyvinyl chloride

Answer. b

54. Armouring in cable is used to protect the cable from

  1. Voltage surge
  2. Mechanical injury
  3. Surge current
  4. Increased voltage

Answer. b

55. Cables may be considered as ___________ of reactive power.

  1. Absorbers
  2. Generators
  3. Neither absorbers nor generators
  4. Absorbers and generators

Answer. b

56. In underground cables, electrical stress grading is carried out using

  1. Transposition
  2. Insulation
  3. Sheathing
  4. armouring

Answer. c

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