Q.

The speed of a dc motor is 

  • Adirectly proportional to back emf and flux
  • Bdirectly proportional to it back emf and inversely proportional to flux
  • Cinversely proportional to both back emf and flux
  • Ddirectly proportional to flux and inversely proportional to back emf
Correct Answer : (B)

directly proportional to it back emf and inversely proportional to flux

Hints :

The speed of a dc motor is directly proportional to it back emf and inversely proportional to flux.

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