A DC, separately excited motor is used to drive a constant-torque load. The field circuit is excited by a full-wave, AC/DC SCRconverter. The armature circuit of the motor is connected to a constant dc voltage source of 160 V. The inductance of thefield circuit is large, and the field current is continuous. The field AC voltage (input to the converter) is 127 V (rms), and thefield resistance is 110 N. The armature resistance is 2.2 N. When the triggering angle of the SCRS is adjusted to zero, themotor speed is 1300 rpm, and the armature current is 13 A.A1• Calculate the average current and dc power of the field circuit when the triggering angle isequal to 15°.LaRaIf1.04AVaMP¡ =110.89WA2If the motor speed is to be increased to 1700 rpm, what is the triggering angle?(a) Circuita =

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A DC, separately excited motor is used to drive a constant-torque load. The field circuit is excited by a full-wave, AC/DC SCR converter. The armature circuit of the motor is connected to a constant dc voltage source of 160 V. The inductance of the field circuit is large, and the field current is continuous. The field AC voltage (input to the converter) is 127 V (rms), and the field resistance is 110 2. The armature resistance is 2.2 2. When the triggering angle of the SCRS is adjusted to zero, the motor speed is 1300 rpm, and the armature current is 13 A. • Calculate the average current and dc power of the field circuit when the triggering angle is i, A equal to 15°. La Ra Va I = 1.04 Lf Pf = 110.89 W M F2 • If the motor speed is to be increased to 1700 rpm, what is the triggering angle? A2 (a) Circuit a =

A DC, separately excited motor is used to drive a constant-torque load. The field circuit is excited by a full-wave, AC/DC SCR converter. The armature circuit of the motor is connected to a constant dc voltage source of 160 V. The inductance of the field circuit is large, and the field current is continuous. The field AC voltage (input to the converter) is 127 V (rms), and the field resistance is 110 2. The armature resistance is 2.2 2. When the triggering angle of the SCRS is adjusted to zero, the motor speed is 1300 rpm, and the armature current is 13 A. • Calculate the average current and dc power of the field circuit when the triggering angle is i, A equal to 15°. La Ra Va I = 1.04 Lf Pf = 110.89 W M F2 • If the motor speed is to be increased to 1700 rpm, what is the triggering angle? A2 (a) Circuit a =

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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