ETO – ETO – Section 2 : 2023/JUN/06 – 2023/OCT/06
Question
Q6. A) What is back emf? Derive the relation for the back emf and the supplied voltage in terms of armature resistance. (6)
b) A three-phase induction motor is wound for four poles and is supplied from a 50 HZ system.
Calculate:
(i) The synchronous speed
(ii) The speed of the rotor when the slip is 4 percent
(iii) The rotor frequency when the speed of the rotor is 600 r/min. (10)
Asked in Year/Month/Ques No.
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