Characteristics of DC Motors MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Characteristics of DC Motors, 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 Characteristics of DC Motors 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 Characteristics of DC Motors mcq questions that explore various aspects of Characteristics of DC Motors problems. Each MCQ is crafted to challenge your understanding of Characteristics of DC Motors 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 Characteristics of DC Motors 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 Characteristics of DC Motors. 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 Characteristics of DC Motors knowledge to the test? Let's get started with our carefully curated MCQs!

Characteristics of DC Motors MCQs | Page 5 of 6

Discover more Topics under DC Machines

Q41.
For the same H.P. rating and full load speed, which of the following motor has poor starting torque?

a.

Series motor

b.

Shunt motor

c.

Cumulative compound motor

d.

Differential compound motor

Discuss
Answer: (d).Differential compound motor
Q42.
Unlike DC series motor, DC compound motor can be started on no-load.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q43.
Flywheel is used with DC compound motor to reduce the peak demand by the motor, compound motor has to be _____________

a.

Level compounded

b.

Under compounded

c.

Cumulatively compounded

d.

Differentially compounded

Discuss
Answer: (c).Cumulatively compounded
Q44.
What will happen if shunt field suddenly opens, in a differential compound DC motor?

a.

Motor will first stop and then run in opposite direction as series motor

b.

Motor will not work and come to stop

c.

Motor will work as series motor and run at infinitely high speed

d.

Motor will work as series motor and run at slow speed

Discuss
Answer: (a).Motor will first stop and then run in opposite direction as series motor
Q45.
What will happen if the series field of a differential compound motor is short circuited?

a.

Net flux will decrease

b.

Speed will increase

c.

Speed will remain constant

d.

Speed will decrease

Discuss
Answer: (d).Speed will decrease
Q46.
What will happen if the series field of a cumulative compound motor is short circuited?

a.

Net flux will increase

b.

Speed will increase

c.

Speed will remain constant

d.

Speed will decrease

Discuss
Answer: (b).Speed will increase
Q47.
DC motor is to a drive a load which is almost zero for certain part of the load cycle and peak value for short duration. We will select __________

a.

Series motor

b.

Shunt motor

c.

Compound motor

d.

Any DC motors

Discuss
Answer: (c).Compound motor
Q48.
With increase in armature current, speed of the cumulative compound motor _________

a.

Reduces slowly compare to shunt motor

b.

Reduces sharply compare to shunt motor

c.

Remains constant

d.

Increases in proportionality with armature current

Discuss
Answer: (b).Reduces sharply compare to shunt motor
Q49.
Speed current characteristic of cumulative DC compound motor at larger values of armature current is similar to that of _____________

a.

DC shunt motor

b.

Induction motor

c.

DC differential compound motor

d.

DC series motor

Discuss
Answer: (d).DC series motor
Q50.
Differential compound motor is used in large number of applications.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Page 5 of 6