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We can not operate a cage induction motor on a variable frequency load due to ___________(a) no availability of varying the speed(b) availability of variable speed(c) low starting torque(d) fixed slipThis question was posed to me in an interview for job.Enquiry is from Applications of Polyphase Induction Motors topic in portion Induction Machines of Electrical Machines |
Answer» RIGHT option is (a) no AVAILABILITY of varying the speed For explanation: We can not increase or decrease the rotor RESISTANCE of a cage induction motor, hence it is not SUITABLE for a variable FREQUENCY. |
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