2- Appropriate no-load tests on a two-phase servomotor rated at 115 V, 60 Hz, two- poles, give the following parameters: r, = 302 Q r2 = 1380 N %3D X1 =3850 X2 = 385 N Xm = 6950 This servomotor is operated with Va=11520° and V=80Z-90° V, and a rotor slip of 0.25. a- Draw the appropriate equivalent circuit for the positive- and negative- sequence voltage sets. Show the proper applied voltage in each case. b- Compute the developed torque, expressed in synchronous watts and Nm. c- What is the r.m.s. value of the current that flows through the control winding? d- Compute the torque developed by this motor at a slip of 0.25 when it operates as a balanced two-phase motor, i.e., V=115Z0° and V,=115Z-90° V. e- Compute the developed torque when the motor operates as a balanced two-phase motor at a slip of 1.75.

2- Appropriate no-load tests on a two-phase servomotor rated at 115 V, 60 Hz, two- poles, give the following parameters: r, = 302 Q r2 = 1380 N %3D X1 =3850 X2 = 385 N Xm = 6950 This servomotor is operated with Va=11520° and V=80Z-90° V, and a rotor slip of 0.25. a- Draw the appropriate equivalent circuit for the positive- and negative- sequence voltage sets. Show the proper applied voltage in each case. b- Compute the developed torque, expressed in synchronous watts and Nm. c- What is the r.m.s. value of the current that flows through the control winding? d- Compute the torque developed by this motor at a slip of 0.25 when it operates as a balanced two-phase motor, i.e., V=115Z0° and V,=115Z-90° V. e- Compute the developed torque when the motor operates as a balanced two-phase motor at a slip of 1.75.

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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