1 Answer

Answer :

Starters are used with D.C. motors because to restrict armature current as there is no back e.m.f. while starting.

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Description : In case of conductively compensated D.C. series motors, the compensating winding is provided?

Last Answer : In case of conductively compensated D.C. series motors, the compensating winding is provided in series with armature winding.

Last Answer : When two D.C. series motors are connected in parallel, the resultant speed is normal speed.

Last Answer : In D.C. shunt motors as load is reduced the speed will remain almost constant.

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Description : What is the advantage of using soft starters?

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Last Answer : D

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Description : In a dc machine, interpoles are used to  (1) neutralize the effect of armature reaction in the interpolar region (2) generate more induced emf in the armature (3) avoid interference of the armature flux with the main -field flux (4) reduce the demagnetizing effect of armature reaction

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Description : Damper winding is provided in 3 phase synchronous motors to :

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Description : SINGLE PHASE INDUCTION MOTORS MCQ

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