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A two pole induction motor is to be used to drive a very heavy mixer in...

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Electrical Engineering

A two pole induction motor is to be used to drive a very heavymixer in the cement industry. Three phase rated voltage andfrequency in Pakistan is known to be 440 V and 50 Hz respectively.This 100.56 hp machine is essentially a three- phase machine with Yconfiguration. You have to analyze the behavior of the machine forwhich one has to know the parameters of the equivalent circuit,they are mentioned below: Xm = 7.2 ohms Prise = 250 W Prew = 0.5 KWX, = 0.17 ohms X> = 0.17 ohms R> = 0.056 ohms Pcore = LL kWR; = 0.075 ohms If the slip of motor is 4 %, by analyzing theequivalent circuit, determine the following values. a) Statorcopper losses b) Air gap power c) Amount of power converted fromelectrical to mechanical d) Load torque e) And the efficiency ofthe machine working in this scenario.

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