Question

Practical reason behind speed of DC shunt motor is proportional to back emf only is ____________

a.

Back emf is equal to armature drop

b.

Flux is proportional to field current

c.

Flux is proportional to armature current

d.

Flux is practically constant in DC shunt motors

Answer: (d).Flux is practically constant in DC shunt motors

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Q. Practical reason behind speed of DC shunt motor is proportional to back emf only is ____________

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