Q2. Answer the following brietfy: 1. Consider the DC motor section shown in Fig. 1. Its field magnets are excited and its armature conductors are supplied with current from the supply mains. Redraw Fig. 1 showing the direction of the rotation. Suggest one way to reverse the direction of armature's rotation. 2. Give two differences between the characteristics of Shunt and Series Motors. 3. Which motor is preferred for driving a load that totally and suddenly thrown off without any fear of excessive speed resulting? (Series motor or shunt motor) and why? 4. Classify the DC generators. 5. A DC generator supplies 20kw, with an efficiency of 87%, find the total copper loss if the stray loss is 1400W. Armature Fig. 1

Q2. Answer the following brietfy: 1. Consider the DC motor section shown in Fig. 1. Its field magnets are excited and its armature conductors are supplied with current from the supply mains. Redraw Fig. 1 showing the direction of the rotation. Suggest one way to reverse the direction of armature's rotation. 2. Give two differences between the characteristics of Shunt and Series Motors. 3. Which motor is preferred for driving a load that totally and suddenly thrown off without any fear of excessive speed resulting? (Series motor or shunt motor) and why? 4. Classify the DC generators. 5. A DC generator supplies 20kw, with an efficiency of 87%, find the total copper loss if the stray loss is 1400W. Armature Fig. 1

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

Please
I need the answer as soon as possible
Difference Between derivatives differential differe vatiation
The given system has accuracy.
I need answer within 5 minutes please please with my best wishes
Took 1ook iooK a) What is P b) What is P and Pe if the transfurmer and is back wards?
Solve the following. Show complete solution, resistor combination and circuit transformation. Box final answer. Fix calculator to 4 decimal places. 1. Determine RT using delta-wye or wye-delta transformation. Also, find IT. 1ODV 6n M th 20 12.0 M lon 28n 18.n
SUBJECT: CERCIT
I need the answer as soon as possible
true or false
Instructions: DO NOT INCLUDE THE UNITS ANYMORE UPON PUTTING THE FINAL ANSWER OR ELSE YOU`LL GET INCORRECT ANSWER. INCLUDE ALL THE DECIMALS. Find the Vo during the positive half cycle of the 2 Circuits below Find the Vo during the negative half cycle of the 2 Circuits below