Cables MCQs with answers Page - 4

Here, you will find a collection of MCQ questions on Cables. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

Admin • 802.91K Points
Coach

Q. The insulation of the cable decreases with

  • (A) the increase in length of the insulation
  • (B) the decrease in the length of the insulation
  • (C) either (a) or (b)
  • (D) none of the above

A

Admin • 802.91K Points
Coach

Q. The insulating material should have

  • (A) low permittivity
  • (B) high resistivity
  • (C) high dielectric strength
  • (D) all of the above

A

Admin • 802.91K Points
Coach

Q. The insulating material for cables should

  • (A) be acid proof
  • (B) be non-inflammable
  • (C) be non-hygroscopic
  • (D) have all above properties

A

Admin • 802.91K Points
Coach

Q. The insulating material for a cable should have

  • (A) low cost
  • (B) high dielectric strength
  • (C) high mechanical strength
  • (D) all of the above

A

Admin • 802.91K Points
Coach

Q. The electrostatic stress in underground cables is

  • (A) same at the conductor and the sheath
  • (B) minimum at the conductor and maximum at the sheath
  • (C) maximum at the conductor and minimum at the sheath
  • (D) zero at the conductor as well as on the sheath

A

Admin • 802.91K Points
Coach

Q. The disadvantage with paper as insulating material is

  • (A) it is hygroscopic
  • (B) it has high capacitance
  • (C) it is an organic material
  • (D) none of the above

A

Admin • 802.91K Points
Coach

Q. The current carrying capacity of cables in D.C. is more thanthat in A.C. mainly due to

  • (A) absence of harmonics
  • (B) non-existence of any stability limit
  • (C) smaller dielectric loss
  • (D) absence of ripples

A

Admin • 802.91K Points
Coach

Q. The breakdown voltage of a cable depends on

  • (A) presence of moisture
  • (B) working temperature
  • (C) time of application of the voltage
  • (D) all of the above

A

Admin • 802.91K Points
Coach

Q. The breakdown of insulation of the cable can be avoided economically by the use of

  • (A) inter-sheaths
  • (B) insulating materials with different dielectric constants
  • (C) both (a) and (b)
  • (D) none of the above

A

Admin • 802.91K Points
Coach

Q. The bedding on a cable consists of

  • (A) hessian cloth
  • (B) jute
  • (C) any of the above
  • (D) none of the above

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