A 6-pole, 230-V, 60-Hz, Y-connected, three-phase induction motor has R1=0.50, R2'=0.250,X1=0.7502, X2'=0.52, Xm=1000, and Rc-50022. The friction and windage loss is 150 W.Determine the efficiency of the motor at its rated slip of 1.5%. Use the original equivalent circuit.

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A 6-pole, 230-V, 60-Hz, Y-connected, three-phase induction motor has R1=0.50, R2'=0.250, X1=0.759, X2¹-0.59, Xm-1009, and Rc-50092. The friction and windage loss is 150 W. Determine the efficiency of the motor at its rated slip of 1.5%. Use the original equivalent circuit.

A 6-pole, 230-V, 60-Hz, Y-connected, three-phase induction motor has R1=0.50, R2'=0.250, X1=0.759, X2¹-0.59, Xm-1009, and Rc-50092. The friction and windage loss is 150 W. Determine the efficiency of the motor at its rated slip of 1.5%. Use the original equivalent circuit.

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 6-pole, 230-V, 60-Hz, Y-connected, three-phase induction motor has R1=0.50, R2'=0.250,
X1=0.7502, X2'=0.52, Xm=1000, and Rc-50022. The friction and windage loss is 150 W.
Determine the efficiency of the motor at its rated slip of 1.5%. Use the original equivalent circuit.

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Step 2: equivalent circuit diagram

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Step 3: Calculating the load resistance and current

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Step 4: Calculating the total output power

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Step 5: Calculating the input power

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Step 6: Calculating the efficiency of the motor

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