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
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Please answer all in brief i will give positive rate
![Q2. Answer the following briefly:
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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F637976bd-80fb-4ec0-bb34-5fa84db876cc%2Fa5026842-f392-4f12-873f-ce008eec5707%2F6deviup_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q2. Answer the following briefly:
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
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