8T A 4-pole, single-phase, squirrel-cage induction motor operates from a 115V, 50 Hz supply. The parameters are : Stator impedance (1.9+j2.7) N Rotor impedance (4.4+j2.6)Q referred to stator Magnetising reactance j76 N measured %3D !3! Find the approximate output power and its corresponding power factor when the motor speed is 1400 r.p.m. assume that iron and friction losses equal to copper losses at this speed. Ans[ 192W, 0.57 lag]
8T A 4-pole, single-phase, squirrel-cage induction motor operates from a 115V, 50 Hz supply. The parameters are : Stator impedance (1.9+j2.7) N Rotor impedance (4.4+j2.6)Q referred to stator Magnetising reactance j76 N measured %3D !3! Find the approximate output power and its corresponding power factor when the motor speed is 1400 r.p.m. assume that iron and friction losses equal to copper losses at this speed. Ans[ 192W, 0.57 lag]
Chapter39: Synchronous Motor Operation
Section: Chapter Questions
Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...
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