Q1: A single-phase induction motor is rotating at a speed of 1790 rpm. Its rated nameplate is; 150-V, 60-Hz, 4-pole. Determine its per-unit slip (a) in the direction of rotation and (b) in the opposite direction. At standstill the rotor resistance is 13 N, determine the effective rotor resistance in each branch. Q2: A single-phase induction motor with a 4-pole, 50-Hz, 130-V, is rotating in the clockwise direction at a speed of 1450 rpm. Determine its per-unit slip (a) in the direction of rotation and (b) in the opposite direction. At standstill the rotor resistance is 15 2, determine the effective rotor resistance in each branch.
Q1: A single-phase induction motor is rotating at a speed of 1790 rpm. Its rated nameplate is; 150-V, 60-Hz, 4-pole. Determine its per-unit slip (a) in the direction of rotation and (b) in the opposite direction. At standstill the rotor resistance is 13 N, determine the effective rotor resistance in each branch. Q2: A single-phase induction motor with a 4-pole, 50-Hz, 130-V, is rotating in the clockwise direction at a speed of 1450 rpm. Determine its per-unit slip (a) in the direction of rotation and (b) in the opposite direction. At standstill the rotor resistance is 15 2, determine the effective rotor resistance in each branch.
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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