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2. A400V three phase 60HZ induction motor with 4 poles rotates at 1620rpm with a usable output torque of 400Nm. The mechanical loss for
2. A400V three phase 60HZ induction motor with 4 poles rotates at 1620rpm with a usable output torque of 400Nm. The mechanical loss for friction and windage is 100Nm. Calculate: a) the synchronous speed (Ns) in rpm. 4 marks b) the slip (S) at full load output. 4 marks c) the frequency of induced emf (f.) of rotor circuit in Hz. d) the usable mechanical power output in W. 4 marks 3 marks e) the gross mechanical power output in W. 6 marks f) the rotor copper loss in W. 4 marks
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Physics
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
2nd edition
77339681, 978-0077339685
