Cables MCQs with answers Page - 2

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 cables, the location of fault is usually found out by comparing

  • (A) the resistance of the conductor
  • (B) the inductance of conductors
  • (C) the capacitances of insulated conductors
  • (D) all above parameters

A

Admin • 802.91K Points
Coach

Q. High tension cables are generally used up to

  • (A) 11 kV
  • (B) 33 kV
  • (C) 66 kV
  • (D) 132 kV

A

Admin • 802.91K Points
Coach

Q. If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be

  • (A) 5 kV/mm
  • (B) 10 kV/mm
  • (C) 15 kV/mm
  • (D) 30 kV/mm

A

Admin • 802.91K Points
Coach

Q. If a power cable and a communication cable are to run parallel the minimum distance between the two, to avoid interference, should be

  • (A) 2 cm
  • (B) 10 cm
  • (C) 50 cm
  • (D) 400 cm

A

Admin • 802.91K Points
Coach

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

  • (A) becomes one-fourth
  • (B) becomes one-half
  • (C) becomes double
  • (D) remains unchanged

A

Admin • 802.91K Points
Coach

Q. In a cable immediately above metallic sheath _________ is provided.

  • (A) earthing connection
  • (B) bedding
  • (C) armouring
  • (D) none of the above

A

Admin • 802.91K Points
Coach

Q. In a cable the voltage stress is maximum at

  • (A) sheath
  • (B) insulator
  • (C) surface of the conductor
  • (D) core of the conductor

A

Admin • 802.91K Points
Coach

Q. In a cable, the maximum stress under operating conditions is at

  • (A) insulation layer
  • (B) sheath
  • (C) armour
  • (D) conductor surface

A

Admin • 802.91K Points
Coach

Q. In cables the charging current

  • (A) lags the voltage by 90°
  • (B) leads the voltage by 90°
  • (C) lags the voltage by 180°
  • (D) leads the voltage by 180°

A

Admin • 802.91K Points
Coach

Q. In capacitance grading of cables we use a _________ dielectric.

  • (A) composite
  • (B) porous
  • (C) homogeneous
  • (D) hygroscopic

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