A wound rotor, induction motor has a rotor resistance of 0.6 ohms per phase and a rotor leakage reactance of 8 ohms. a)What is the operating speed (rpm) of this 2-pole induction motor fed from a 50Hz supply if the slip is 5%? b)If maximum torque occurs when R2 = sX2, what is the slip at maximum torque? c)What resistance must be added to the rotor circuit to give maximum startingtorque?
A wound rotor, induction motor has a rotor resistance of 0.6 ohms per phase and a rotor leakage reactance of 8 ohms. a)What is the operating speed (rpm) of this 2-pole induction motor fed from a 50Hz supply if the slip is 5%? b)If maximum torque occurs when R2 = sX2, what is the slip at maximum torque? c)What resistance must be added to the rotor circuit to give maximum startingtorque?
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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A wound rotor, induction motor has a rotor resistance of 0.6 ohms per phase and a rotor leakage reactance of 8 ohms.
a)What is the operating speed (rpm) of this 2-pole induction motor fed from a 50Hz supply if the slip is 5%?
b)If maximum torque occurs when R2 = sX2, what is the slip at maximum torque?
c)What resistance must be added to the rotor circuit to give maximum startingtorque?
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