A 25 hp, 460 V, 60 Hz, 4 poles, Y connected three phase induction motor has the following per-phase impedances referred to the stator circuit: Rs = 0.641 Q RR = 0.332 Q Xs = 1.106 Q XR = 0.464 Q Xm = 26.3 Q The total rotational losses and core loss are lumped together, constant at (1100 + x00) W, where x is the last digit of your student ID number. For a rotor slip of 2.2 % at the rated voltage and rated frequency, i) Draw the equivalent circuit of the induction motor with proper label of all parameters. ii) Calculate the stator current, rotor current and magnetizing current of the induction motor iii) Calculate the power factor

A 25 hp, 460 V, 60 Hz, 4 poles, Y connected three phase induction motor has the following per-phase impedances referred to the stator circuit: Rs = 0.641 Q RR = 0.332 Q Xs = 1.106 Q XR = 0.464 Q Xm = 26.3 Q The total rotational losses and core loss are lumped together, constant at (1100 + x00) W, where x is the last digit of your student ID number. For a rotor slip of 2.2 % at the rated voltage and rated frequency, i) Draw the equivalent circuit of the induction motor with proper label of all parameters. ii) Calculate the stator current, rotor current and magnetizing current of the induction motor iii) Calculate the power factor

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

100%

A 25 hp, 460 V, 60 Hz, 4 poles, Y connected three phase induction motor has
the following per-phase impedances referred to the stator circuit:
Rs = 0.641 Q
RR = 0.332 Q
Xs = 1.106 Q
XR = 0.464 Q
Xm= 26.3 Q
The total rotational losses and core loss are lumped together, constant at (1100 +
x00) W, where x is the last digit of your student ID number. For a rotor slip of
2.2 % at the rated voltage and rated frequency,
i)
Draw the equivalent circuit of the induction motor with proper label of all
parameters.
ii) Calculate the stator current, rotor current and magnetizing current of the
induction motor
iii) Calculate the power factor
iv) Calculate the output power
v)
Calculate the efficiency of the induction motor

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