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A 3-phase, 4 pole 50 Hz induction motor provides 20 HP to a load at a speed of 1480 RPM. If the mechanical losses of the motor are assumed to be 0, calculate a. Slip at given speed Answer: .0133 b. The developed (or Mechanical) Torque Answer: 14920 W c. The shaft speed of the motor if the Torque is increased by 125% Answer: 1455 rpm d. The output power at the Torque calculated in part c Answer: 33002.8 W

A 3-phase, 4 pole 50 Hz induction motor provides 20 HP to a load at a speed of 1480 RPM. If the mechanical losses of the motor are assumed to be 0, calculate a. Slip at given speed Answer: .0133 b. The developed (or Mechanical) Torque Answer: 14920 W c. The shaft speed of the motor if the Torque is increased by 125% Answer: 1455 rpm d. The output power at the Torque calculated in part c Answer: 33002.8 W

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, 4 pole 50 Hz induction motor provides 20 HP to a load at a speed of 1480 RPM. If the mechanical losses of the motor are assumed to be 0, calculate
a. Slip at given speed Answer: .0133
b. The developed (or Mechanical) Torque Answer: 14920 W
c. The shaft speed of the motor if the Torque is increased by 125% Answer: 1455 rpm
d. The output power at the Torque calculated in part c Answer: 33002.8 W

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