D. C. Generators MCQs with answers Page - 12

Here, you will find a collection of MCQ questions on D. C. Generators. 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 number of armature parallel paths in a two-pole D.C. generator having duplex lap winding is

  • (A) 2
  • (B) 4
  • (C) 6
  • (D) 8

A

Admin • 802.91K Points
Coach

Q. The series field of a short-shunt D.C. generator is excited by

  • (A) external current
  • (B) armature current
  • (C) shunt current
  • (D) load current

A

Admin • 802.91K Points
Coach

Q. Shunt generators are most suited for stable parallel operation because of their

  • (A) rising voltage characteristics
  • (B) identical voltage characteristics
  • (C) drooping voltage characteristics
  • (D) linear voltage characteristics

A

Admin • 802.91K Points
Coach

Q. The main factor which leads to unstable parallel operation of flat and over compounded generators is

  • (A) their rising voltage characteristics
  • (B) unequal number of turns in their series field windings
  • (C) unequal speed regulation of their primemovers
  • (D) unequal series field resistances

A

Admin • 802.91K Points
Coach

Q. If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to

  • (A) reverse the field connections
  • (B) increase the field resistance
  • (C) increase the speed of primemover
  • (D) check armature insulation resis¬tance

A

Admin • 802.91K Points
Coach

Q. Which of the following protects a cable against mechanical injury ?

  • (A) Bedding
  • (B) Sheath
  • (C) Armouring
  • (D) None of the above

A

Admin • 802.91K Points
Coach

Q. Which of the following insulation is used in cables ?

  • (A) Varnished cambric
  • (B) Rubber
  • (C) Paper
  • (D) Any of the above

A

Admin • 802.91K Points
Coach

Q. The thickness of the layer of insulation on the conductor, in cables, depends upon

  • (A) reactive power
  • (B) power factor
  • (C) voltage
  • (D) current carrying capacity

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

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