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A 3-phase 6-pole Y connected induction motor is supplied from a 3-phase 50 Hz AC source. it draws an input power of 100 kW from the 3-phase supply. The losses (copper and iron) in the stator are 10 kW. The mechanical (friction and windage) losses are 5 kW. The slip is 5%. Find the following: a. The synchronous speed. b. The rotor speed. c. The power input to the rotor. d. The rotor copper losses. e. Mechanical power developed. f. Mechanical power output delivered to the load (Pout). g. The shaft torque.

A 3-phase 6-pole Y connected induction motor is supplied from a 3-phase 50 Hz AC source. it draws an input power of 100 kW from the 3-phase supply. The losses (copper and iron) in the stator are 10 kW. The mechanical (friction and windage) losses are 5 kW. The slip is 5%. Find the following: a. The synchronous speed. b. The rotor speed. c. The power input to the rotor. d. The rotor copper losses. e. Mechanical power developed. f. Mechanical power output delivered to the load (Pout). g. The shaft torque.

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
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A 3-phase 6-pole Y connected induction motor is supplied from a 3-phase 50 Hz AC source. it draws an input power of 100 kW from the 3-phase supply. The losses (copper and iron) in the stator are 10 kW. The mechanical (friction and windage) losses are 5 kW. The slip is 5%. Find the following:
a. The synchronous speed.

b. The rotor speed.

c. The power input to the rotor.

d. The rotor copper losses.

e. Mechanical power developed.

f. Mechanical power output delivered to the load (Pout).

g. The shaft torque.

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