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Which type of Induction motor is best for e.m.f injection method?(a) SCIM(b) WRIM(c) Single-phase IM(d) Linear IMI have been asked this question in an interview for internship.I would like to ask this question from Induction Motors topic in section Braking of DC Motors & Induction Motors of Electric Drives

Answer»

Right answer is (b) WRIM

Explanation: E.M.F injection METHOD is used to control the speed of INDUCTION MOTOR. It is only applicable for WRIM because WRIM rotor consists of COPPER windings connected in star connection. The external e.m.f can be connected with it using the slip rings.



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