2. A 480V, 60H2, 8-pole, three-phase Y-connected induction motor has the following equivalent circuit parameters: R: - 0.0450, X; - 0.30N, R: -0.0542, X;-0.302, Xw- 10.02. Core, rotational, and stray losses are negligible. The motor is operating from an ideal 480V, 60HZ, three-phase balanced ac voltage source. (a) Determine the initial magnitude of the motor's line current if the motor is started from the 480V, 60Hz power source [A]. (b) The motor is connected to a mechanical load and operating at a speed of 850 rpm. Determine the magnitude of the motor's line current [AJ. (c) Find the motor's torque if the mechanical load is operating at a speed of 850 rpm [N-m].

2. A 480V, 60H2, 8-pole, three-phase Y-connected induction motor has the following equivalent circuit parameters: R: - 0.0450, X; - 0.30N, R: -0.0542, X;-0.302, Xw- 10.02. Core, rotational, and stray losses are negligible. The motor is operating from an ideal 480V, 60HZ, three-phase balanced ac voltage source. (a) Determine the initial magnitude of the motor's line current if the motor is started from the 480V, 60Hz power source [A]. (b) The motor is connected to a mechanical load and operating at a speed of 850 rpm. Determine the magnitude of the motor's line current [AJ. (c) Find the motor's torque if the mechanical load is operating at a speed of 850 rpm [N-m].

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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