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(Solved): 4. There are \( 11^{\text {th }} \) and \( 13^{\text {th }} \) harmonic magnetic fields in the air ...
4. There are \( 11^{\text {th }} \) and \( 13^{\text {th }} \) harmonic magnetic fields in the airgap of an induction motor and they produce harmonic induction torque. (a) Sketch torque/speed characteristic of the induction motor, which should include the effect of the harmonic induction torque. (b) What are the negative effects of the harmonic induction torque produced by \( 13^{\text {th }} \) harmonic magnetic field? (12 marks)
Expert Answer
A.The torque slip characteristics of a three-phase inductor motor are characterized into three regions such as high slip region, medium slip region, and low slip region. It describes the variation of torque with slip. The difference in the position o