A 440V , 60Hz , 6-pole , 3-phase, Y-connected induction machine has the following parameters: R1=0.451 ohms, R2=0.254 ohms, X1= 0.504 ohms, X2= 0.305 ohms, Xm= 30.70 ohms, Rotational losses=2450W. The motor drives a mechanical load at a speed of 1170 rpm. The core loss and other losses are assumed to zero. Calculate the following: (i)Synchronous speed in rpm (ii)Slip (iii)Line Current (iv)Input Power (v)Airgap Power (vi)Torque Developed (vii)Output Power in Hp (viii)Efficiency

A 440V , 60Hz , 6-pole , 3-phase, Y-connected induction machine has the following parameters: R1=0.451 ohms, R2=0.254 ohms, X1= 0.504 ohms, X2= 0.305 ohms, Xm= 30.70 ohms, Rotational losses=2450W. The motor drives a mechanical load at a speed of 1170 rpm. The core loss and other losses are assumed to zero. Calculate the following: (i)Synchronous speed in rpm (ii)Slip (iii)Line Current (iv)Input Power (v)Airgap Power (vi)Torque Developed (vii)Output Power in Hp (viii)Efficiency

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

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