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Where diverters are used?

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in DC Machines by (506k points)
Where diverters are used?

(a) In shunt motors

(b) In series motors

(c) In both motors

(d) All other motors except shunt and series motors

I have been asked this question by my school principal while I was bunking the class.

My question is taken from Speed Control Using Field Control of Series Motor topic in chapter DC Motors of DC Machines

1 Answer

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Best answer
Right option is (b) In series motors

To elaborate: Diverters are used in series motors for speed control, they are not used in shunt motors. Since, shunt field winding resistance is very high, if we connect a diverter across shunt field winding, total current will flow through diverter and it will almost short circuit the shunt field winding. This will increase the motor speed to a very high value.

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