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 25 of 56

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Q241.
When an open coiled helical compression spring is subjected to an axial load (W), the compression produced in the spring will be (where n = No. of active turns of the spring, and G = Modulus of rigidity for the spring material)

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q242.
Two shafts A and B under pure torsion are of identical length and identical weight and are made of the same material. The shaft A is solid and the shaft B is hollow. We can say that

a.

shaft B is better than shaft A

b.

shaft A is better than shaft B

c.

both the shafts are equally good

d.

None of these

Discuss
Answer: (a).shaft B is better than shaft A
Q243.
The centre distance between two meshing involute gears is equal to

a.

Sum of base circle radii/cosฯ†

b.

Difference of base circle radii/cosฯ†

c.

Sum of pitch circle radii/cosฯ†

d.

Difference of pitch circle radii/cosฯ†

Discuss
Answer: (a).Sum of base circle radii/cosฯ†
Q244.
Which of the following statement is wrong ?

a.

The power transmitted by V-belts is less than flat belts for the same coefficient of friction, arc of contact and allowable tension in the belts

b.

The V-belt drive is used with large centre distance

c.

The V-belt may be operated in either direction with tight side of the belt at the top or bottom

d.

The ratio of driving tensions in V-belt drive is more than flat belt drives

Discuss
Answer: (b).The V-belt drive is used with large centre distance
Q245.
In a flange coupling, the thickness of flanges is taken as one-half the diameter of shaft.

a.

Agree

b.

Disagree

c.

Can't say

d.

None of these

Discuss
Answer: (a).Agree
Q246.
In a hydrodynamic lubricated bearing

a.

there is a thick film of lubricant between the journal and the bearing

b.

there is a thin film of lubricant between the journal and the bearing

c.

there is no lubricant between the journal and the bearing

d.

the lubricant is forced between the journal and the bearing, by external pressure

Discuss
Answer: (a).there is a thick film of lubricant between the journal and the bearing
Q247.
Which of the following statement is correct for gears?

a.

The addendum is less than dedendum

b.

The pitch circle diameter is equal to the product of module and number of teeth

c.

The pitch circle is always greater than the base circle

d.

all of the above

Discuss
Answer: (d).all of the above
Q248.
A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)

a.

less than 20 d

b.

greater than 30 d

c.

between 20 d and 30 d

d.

equal to inside diameter of pipe

Discuss
Answer: (c).between 20 d and 30 d
Q249.
Stress concentration is caused due to

a.

variations in load acting on a member

b.

variations in properties of materials in a member

c.

abrupt change of cross-section

d.

all of these

Discuss
Answer: (c).abrupt change of cross-section
Q250.
The resistance to fatigue of a material is measured by

a.

elastic limit

b.

Young's modulus

c.

ultimate tensile strength

d.

endurance limit

Discuss
Answer: (d).endurance limit
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