☰ Electrical Machine Design (Electrical Engineering) - MCQs

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Q25.

the number of parallel paths for 4 pole duplex lap winding will be

  • A. 2
  • B. 4
  • C. 6
  • D. 8
    ✍ Discuss    
Q26.

number of parallel paths in a DC machine with duplex wave winding is

  • A. 2
  • B. 4
  • C. 8
  • D. 16
    ✍ Discuss    
Q27.

in DC machines air gap is _________ in comparison to that in AC machines

  • A. very short
  • B. short
  • C. longer
  • D. any of these
    ✍ Discuss    
Q28.

poles of DC machines are often laminated to

  • A. reduce pulsation loss
  • B. reduce armature reaction
  • C. reduce iron weight
  • D. dissipate more heat
    ✍ Discuss    
Q29.

the pole shoe of a DC machines

  • A. are always laminated
  • B. are never laminated
  • C. are sometimes laminated
  • D. are partially laminated
    ✍ Discuss    
Q30.

use of higher specific electric loading is restricted due to problem of

  • A. heat dissipation
  • B. commutation
  • C. armature reaction
  • D. all of these
    ✍ Discuss    
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