Why is the speed of DC shunt motor dependent on Back EMF?
Why is the speed of DC shunt motor dependent on Back EMF?
Right Answer is:
Because flux is constant in DC shunt motor
SOLUTION
- In the case of DC motors Speed ∝ Back emf(Eb)/flux(φ).
- The field winding is connected across the armature. The resistance offered by the field is constant so the current is constant. As current is constant flux also becomes constant b the cause flux is directly proportional to current.
- Therefore the speed of the DC shunt motor depends on the back EMF.