H. W.: A 35 kW induction motor has power factor 0.9 and effliciency 0.9at full-load, power factor 0.6 and efficiency 0.7 at half full-load. At noload the current is 25% of full-load current and power factor is 0.I.Capacitors are supplied to make the line power factor 0.8 at half full-load. With these capacitors in circuit, find the line power factor at: (i) fullload, and (ii) no load.

The complex power in an AC system is defined as the product of rms value of applied voltage and…

H. W.: A 35 kW induction motor has power factor 0.9 and efficiency 0.9 at full-load, power factor 0.6 and efficiency 0.7 at half full-load. At no load the current is 25% of full-load current and power factor is 0.1. Capacitors are supplied to make the line power factor 0.8 at half full- load. With these capacitors in circuit, find the line power factor at: (i) full load, and (ii) no load.

H. W.: A 35 kW induction motor has power factor 0.9 and efficiency 0.9 at full-load, power factor 0.6 and efficiency 0.7 at half full-load. At no load the current is 25% of full-load current and power factor is 0.1. Capacitors are supplied to make the line power factor 0.8 at half full- load. With these capacitors in circuit, find the line power factor at: (i) full load, and (ii) no load.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

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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