Q-1: A 1200rpm separately excited dc motor drives a rated load torque of 85NM. The field and armature resistances are 200 0 and 0.2 Q respectively. The field circuit is fed through a 1-phase semi-controlled ac-to-dc converter with zero degree firing angle. The armature circuit is fed through 1-phase fully controlled converter. Both converters are connected to 400V source. The motor voltage constant is 0.8 V-sec/A-rad. Determine the firing angle of the armature converter at rated load.

Q-1: A 1200rpm separately excited dc motor drives a rated load torque of 85NM. The field and armature resistances are 200 0 and 0.2 Q respectively. The field circuit is fed through a 1-phase semi-controlled ac-to-dc converter with zero degree firing angle. The armature circuit is fed through 1-phase fully controlled converter. Both converters are connected to 400V source. The motor voltage constant is 0.8 V-sec/A-rad. Determine the firing angle of the armature converter at rated load.

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...

See similar textbooks

Similar questions

A single phase Half wave AC voltage controller has a resistive load of 16 ohms with input supply voltage of 240 V, 50 Hz. The delay angle of the thyristors is, a = 21/5. Determine a) The rms output voltage and current. b) Input power factor and Input current. c) Average output voltage and current.
For a 1.8 degree, 2 phase bipolar stepper motor, steeping rate is 100 steps/seconds. The rotational speed of the motor in rpm is
At starting, the windings of a 230 V, 50 Hz, split-phase induction motor have the following parameters. Main winding : R=42; X₁₂ = 7.5 2 Starting winding: R = 7.52; X₂ = 49 the phase angle between main winding current and starting winding current is
What makes buck converters preferable to regulators?
The full-load slip of a 54 Hz, a four-pole induction motor is 4 %. The power converted from electrical to mechanical form in the motor is 23.1 kW. What is the induced torque in this motor?
4. A three phase, 50 Hz induction motor has a full load speed of 1440 rpm. The full load slip will be? a) 4% b) 5% c) 2.4% d) 3%
A three phase six pulse converter having input 430 V 50Hz supply is controlling a de motor. Motor back EMF at 700 rpm is 400 V. Calculate firing angle of the converter when the motor is operating at 600 rpm and 0.7 tunes rated torque. DC motor rating: 700 rpm. 70 kW. 440 N ca
For Electrionic Variable speed drives /Analog speed reference for labvolt serfies 3356-00