A 3-phase, Pin=27187.875 watt,975 RPM, Y- connected wound-rotor induction motor has the following equivalent parameters :- R1=0.280 ,R'2=0.250. The rotor current 28.6 L-5.73 and ignore friction,windage and stray losses,Calculate The efficiency of the motor

A 3-phase, Pin=27187.875 watt,975 RPM, Y- connected wound-rotor induction motor has the following equivalent parameters :- R1=0.280 ,R'2=0.250. The rotor current 28.6 L-5.73 and ignore friction,windage and stray losses,Calculate The efficiency of the motor

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

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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

A 3-phase, Pin=27187.875 watt,975 RPM, Y-
connected wound-rotor induction motor has the
following equivalent parameters :- R1=0.280
,R'2=0.250. The rotor current 28.6 L- 5.73 and
ignore friction,windage and stray losses,Calculate
The efficiency of the motor
Select one:
a. n
=85%
b. nn
=84%
c. n
=88%
d. nn
=90%

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