Machine Design MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Machine Design, a fundamental topic in the field of Mechanical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Machine Design 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 Machine Design mcq questions that explore various aspects of Machine Design problems. Each MCQ is crafted to challenge your understanding of Machine Design principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Mechanical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Machine Design MCQs are your pathway to success in mastering this essential Mechanical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Machine Design. 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 Machine Design knowledge to the test? Let's get started with our carefully curated MCQs!

Machine Design MCQs | Page 23 of 56

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Q221.
Which of the following screw thread is used for power transmission in one direction only.

a.

Acme threads

b.

Square threads

c.

Buttress threads

d.

Multiple threads

Discuss
Answer: (c).Buttress threads
Q222.
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be __________ the bearing modulus.

a.

5 times

b.

10 times

c.

15 times

d.

20 times

Discuss
Answer: (c).15 times
Q223.
Screws jacks have multiple threads.

a.

Agree

b.

Disagree

c.

Can't say

d.

None of these

Discuss
Answer: (b).Disagree
Q224.
In an ordinary bolt, the effect of the impulsive loads applied axially is concentrated on the cross-sectional area at the root of the threads.

a.

Yes

b.

No

c.

Can't say

d.

None of these

Discuss
Answer: (a).Yes
Q225.
The radial distance of a tooth from the pitch circle to the top of the tooth is called

a.

dedendum

b.

addendum

c.

clearance

d.

working depth

Discuss
Answer: (b).addendum
Q226.
In a gear, having involute teeth, the normal to the involute is a tangent to the

a.

pitch circle

b.

base circle

c.

addendum circle

d.

dedendum circle

Discuss
Answer: (b).base circle
Q227.
Which of the following statement is correct ?

a.

The toughness of a material increases when it is heated.

b.

The shear stress in a beam varies from zero at the neutral surface and maximum at the outer fibres.

c.

The stress concentration in static loading is more serious in brittle materials and less serious in ductile materials.

d.

The stress concentration in static loading is more serious in ductile materials and less serious in brittle materials.

Discuss
Answer: (c).The stress concentration in static loading is more serious in brittle materials and less serious in ductile materials.
Q228.
When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to

a.

(1/2) × √(M² + T²)

b.

√(M² + T²)

c.

(1/2) × [M + √(M² + T²)]

d.

M + √(M² + T²)

Discuss
Answer: (b).√(M² + T²)
Q229.
If the size of a standard specimen for a fatigue testing machine is increased, the endurance limit for the material will

a.

have same value as that of standard specimen

b.

increase

c.

decrease

d.

None of these

Discuss
Answer: (c).decrease
Q230.
When the fulcrum is in between the load and effort, the lever is said to be of

a.

first type

b.

second type

c.

third type

d.

any one of these

Discuss
Answer: (a).first type
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