Q1) A 460-V, 25-hp, 60-Hz, four-pole, Y-connected induction motor has the following impedances inohms per phase referred to the stator circuit:R1 = 0.641 N, X1 = 1.106 N, R2' = 0.332 2, X2' 0.464 2, Xo = 26..3 QThe total rotational losses are 1100 Wand are assumed to be constant. The core loss is Jumped in with therotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, find the motor's1) Input current & Efficiency2) Sketch the complete torque-speed characteristic of an induction machine and indicate the threemodes of operation.

In this question we will find input current and efficiency of given induction motor.... Note:- as…

Q1) A 460-V, 25-hp, 60-Hz, four-pole, Y-connected induction motor has the following impedances ohms per phase referred to the stator circuit: R1 = 0.641 Q, X1 1.106 2, R2' = 0.332 2, X2' 0.464 2, Xo = 26..3 Q The total rotational losses are 1100 Wand are assumed to be constant. The core loss is Jumped in with rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, find the motor's

Q1) A 460-V, 25-hp, 60-Hz, four-pole, Y-connected induction motor has the following impedances ohms per phase referred to the stator circuit: R1 = 0.641 Q, X1 1.106 2, R2' = 0.332 2, X2' 0.464 2, Xo = 26..3 Q The total rotational losses are 1100 Wand are assumed to be constant. The core loss is Jumped in with rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, find the motor's

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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59 ۱۱:۶۳ ص | ۲۰۰۸ك.بث | A 460 V.pdf A 460 V, 60 Hz, Star connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the following per phase parameters: R1 = 0.07, R2 = 0.05, X1 = X2 = 0.2, Xm = 6.5, Draw the approximate equivalent circuit and determine the following: 1. III. IV. V. VI. VII. Starting Torque Maximum Torque Rated Torque Stator Current Power Factor Input Power Magnetizing Current †