Armature Reaction MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Armature Reaction, a fundamental topic in the field of DC Machines. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Armature Reaction MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Armature Reaction mcq questions that explore various aspects of Armature Reaction problems. Each MCQ is crafted to challenge your understanding of Armature Reaction principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace DC Machines tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Armature Reaction MCQs are your pathway to success in mastering this essential DC Machines topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Armature Reaction. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Armature Reaction knowledge to the test? Let's get started with our carefully curated MCQs!

Armature Reaction MCQs | Page 5 of 5

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Discuss
Answer: (c).Introducing saturation in teeth and pole-shoe
Q42.
To counter the effect of shift in MNA due to armature reaction, which of the following component can be shifted?
Discuss
Answer: (c).Brushes
Q43.
Calculate the number of conductors on each pole piece required in a compensating winding for a 6-pole lap-wound dc armature containing 286 conductors. The compensating winding carries full armature current. Assume ratio of pole arc/ pole pitch = 0.7.

a.

6

b.

8

c.

9

d.

7

Discuss
Answer: (a).6
Q44.
A compensating winding with ampere-turns greater than peak ampere turns is required in order to neutralize the effect of armature reaction because _____________
Discuss
Answer: (b).Pole arc > Pole pitch
Q45.
If pole arc is less than pole pitch, a compensating winding will have ampere-turns _________ (compare to peak ampere turns).
Discuss
Answer: (a).Less
Q46.
What is the pole arc/pitch ratio, if 360 AT compensating winding is used where 1960 AT is peak value?
Discuss
Answer: (d).0.6
Q47.
Only drawback of compensating winding is _______
Discuss
Answer: (a).Cost
Q48.
Resultant ampere-turn distribution of a DC machine is given by _________

a.

a

b.

b

c.

c

d.

d

Discuss
Answer: (d).d
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