Dr Aslan Jalal EMII Lecture 18 Indur 33 kW, 60 Hz, star-connected, 4 pole, 1755 rpm 3-0 IM are: R1= 0.2 S2, X1= j0.5 2, Xm= j20 2, R2 = 0.1 2, X, = 0.2 2. If the mechanical losses (windage and friction) are 650 W and iron losses are 300 W, determine the following when the motor operates at full load at rated speed: (a) The synchronous speed. (b) The slip. (c) The input current and power factor. (d) The input power. (e) The useful mechanical power. (f) The output torque. (g) The motor efficiency. Answers: (a) 1800 rpm; (b) 0.025; (c) I, = 57.34 – 21°, 0.93 lag; (d) 36918 W; (e) 33 kW; (f) 179.6 Nm; and (g) 89.4%

Dr Aslan Jalal EMII Lecture 18 Indur 33 kW, 60 Hz, star-connected, 4 pole, 1755 rpm 3-0 IM are: R1= 0.2 S2, X1= j0.5 2, Xm= j20 2, R2 = 0.1 2, X, = 0.2 2. If the mechanical losses (windage and friction) are 650 W and iron losses are 300 W, determine the following when the motor operates at full load at rated speed: (a) The synchronous speed. (b) The slip. (c) The input current and power factor. (d) The input power. (e) The useful mechanical power. (f) The output torque. (g) The motor efficiency. Answers: (a) 1800 rpm; (b) 0.025; (c) I, = 57.34 – 21°, 0.93 lag; (d) 36918 W; (e) 33 kW; (f) 179.6 Nm; and (g) 89.4%

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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