A 3-phase, 2200-V, delta-connected, 12-pole 60-Hz induction motor runs at no load with rated voltage and frequency impressed and draws a line current of 20 Amp. and an input power of 14 Kw. The stator is Y-connected, and its resistance per phase is 0.4 Ohm. The rotor resistance r is 0.2 Ohm per phase. Also, x1+x2'=2.00 per phase. The motor runs at a slip of 2% when it is delivering power to a load. For this condition, determine a) The developed torque. b) The input line current and power factor.

A 3-phase, 2200-V, delta-connected, 12-pole 60-Hz induction motor runs at no load with rated voltage and frequency impressed and draws a line current of 20 Amp. and an input power of 14 Kw. The stator is Y-connected, and its resistance per phase is 0.4 Ohm. The rotor resistance r is 0.2 Ohm per phase. Also, x1+x2'=2.00 per phase. The motor runs at a slip of 2% when it is delivering power to a load. For this condition, determine a) The developed torque. b) The input line current and power factor.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 28RQ: What are the advantages and disadvantages of using the following types of motors? shaded-pole...

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