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MCQs

Total Questions : 164 | Page 5 of 17 pages
Question 41. Rubber is most commonly used insulation in cables.
  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes
Question 42. The advantage of oil filled cables is
  1.    More perfect impregnation
  2.    Smaller overall size
  3.    No ionization, oxidation and formation of voids
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 43. The thickness of metallic shielding on cables is usually
  1.    0.04 mm
  2.    0.2 to 0.4 mm
  3.    3 to 5 mm
  4.    40 to 60 mm
 Discuss Question
Answer: Option C. -> 3 to 5 mm
Question 44. Copper as conductor for cables is used as
  1.    Annealed
  2.    Hardened and tempered
  3.    Hard drawn
  4.    Alloy with chromium
 Discuss Question
Answer: Option A. -> Annealed
Question 45. In case of three core flexible cable the color of the neutral is
  1.    Blue
  2.    Black
  3.    Brown
  4.    None of the above
 Discuss Question
Answer: Option A. -> Blue
Question 46. Natural rubber is obtained from milky sap of tropical trees.
  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes
Question 47. PVC stands for
  1.    Polyvinyl chloride
  2.    Post varnish conductor
  3.    Pressed and varnished cloth
  4.    Positive voltage conductor
 Discuss Question
Answer: Option A. -> Polyvinyl chloride
Question 48. Cables, generally used beyond 66 kV are
  1.    Oil filled
  2.    S.L. type
  3.    Belted
  4.    Armoured
 Discuss Question
Answer: Option A. -> Oil filled
Question 49. The advantage of cables over overhead transmission lines is
  1.    Easy maintenance
  2.    Low cost
  3.    Can be used in congested areas
  4.    Can be used in high voltage circuits
 Discuss Question
Answer: Option C. -> Can be used in congested areas
Question 50. The surge resistance of cable is
  1.    5 ohms
  2.    20 ohms
  3.    50 ohms
  4.    100 ohms
 Discuss Question
Answer: Option C. -> 50 ohms

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