Why sip ring used in ac motor also why its not used in dc motor?

Question Posted / ravi tandel

2 Answers
7071 Views
RRB, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Why sip ring used in ac motor also why its not used in dc motor?..

Answer / r g sabnis

Well, the slip rings are used in AC ( Crane duty Motors )

to add extrenal resistance to increse starting torque.

DC motors are with different construction. A commutator is
used to supply DC to armature.

Is This Answer Correct ?

4 Yes

2 No

Why sip ring used in ac motor also why its not used in dc motor?..

Answer / dj

Actualy for better torque in induction motor we should have high resistance and low inductance but in induction motor we have coil which have high inductance so we give high resistance from rheostat to rotor. And we use slip ring because it is use for rotating device only in ac motor

Is This Answer Correct ?

2 Yes

1 No

Post New Answer

More Electrical Engineering Interview Questions

How the electric train gets the supply of electricity? What is the return path of the current?

7 Answers NTPC,

In a circuit a capacitor (paper capacitor ) was burned due to over voltage in this case can we replace that type cappacitor with other tye capacitor ?

1 Answers

what happen if any one phase of a slipring induction rotor winding is open?is it start or won't?

2 Answers Aurobindo, Hetero,

what is torque & how it will produce & what is the formula for that.

2 Answers

how to calculate the knee point voltage of current transformer?

2 Answers

How do you reset circuit breaker?

1 Answers Bhel, Kaveri Steels,

Meter p.t. ratio= 3×230/400 , c.t.ratio = 3×1 (2) A what is m.f.

0 Answers

why the field winding of synchronous machine is excited by dc source