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- A 3-phase, A connected, 400 V, 6 pole, 50 Hz, induction motor has the following equivalent circuit constant in ohm per phase referred to the stator: R₁=0.68, X₁= 2.78, R 2-0.564, X 2=4.82, Xm=25 and Rc = 220 Calculate: (a) The slip at maximum torque. (b) The value of additional rotor resistance to obtain maximum torque at starting.

- A 3-phase, A connected, 400 V, 6 pole, 50 Hz, induction motor has the following equivalent circuit constant in ohm per phase referred to the stator: R₁=0.68, X₁= 2.78, R 2-0.564, X 2=4.82, Xm=25 and Rc = 220 Calculate: (a) The slip at maximum torque. (b) The value of additional rotor resistance to obtain maximum torque at starting.

Introductory Circuit Analysis (13th Edition)
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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7- A 3-phase, A connected, 400 V, 6 pole, 50 Hz, induction motor has the following equivalent circuit constant in ohm per phase referred to the stator: R₁=0.68, X₁= 2.78, R'2=0.564, X 2=4.82, Xm = 25 and Rc = 220 Calculate: (a) The slip at maximum torque. (b) The value of additional rotor resistance to obtain maximum torque at starting.
Transcribed Image Text:7- A 3-phase, A connected, 400 V, 6 pole, 50 Hz, induction motor has the following equivalent circuit constant in ohm per phase referred to the stator: R₁=0.68, X₁= 2.78, R'2=0.564, X 2=4.82, Xm = 25 and Rc = 220 Calculate: (a) The slip at maximum torque. (b) The value of additional rotor resistance to obtain maximum torque at starting.
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