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 36 of 56

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Q351.
If T is the actual number of teeth on a helical gear and ฯ† is the helix angle for the teeth, then formative number of teeth is written as

a.

T sec³ ฯ†

b.

T sec² ฯ†

c.

T/sec³ ฯ†

d.

T cosec ฯ†

Discuss
Answer: (a).T sec³ ฯ†
Q352.
The material generally used for air-craft components is

a.

mild steel

b.

high speed steel

c.

stainless steel

d.

aluminium

Discuss
Answer: (d).aluminium
Q353.
The speed of the sprocket reduces as the chain pitch __________ for a given number of teeth.

a.

increases

b.

decreases

c.

Can't say

d.

None of these

Discuss
Answer: (a).increases
Q354.
In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing

a.

remains constant at all speeds

b.

is minimum at zero speed and increases monotonically with increase in speed

c.

is maximum at zero speed and decreases monotonically with increase in speed

d.

becomes minimum at an optimum speed and then increases with further increase in speed

Discuss
Answer: (d).becomes minimum at an optimum speed and then increases with further increase in speed
Q355.
According to Clavarino's equation, the thickness of a cylinder is equal to (where d = Inner diameter of cylinder, p = Internal pressure, and ฮผ = Poisson's ratio. )

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q356.
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
Q357.
According to Lame's equation, the thickness of a cylinder is equal to (where d = Inner diameter of cylinder, p = Internal pressure, and ฮผ = Poisson's ratio. )

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q358.
A compound cylinder with inner radius 50 mm and outer radius 70 mm is made by shrinking one cylinder on to the other cylinder, The junction radius is 60 mm and the junction pressure is 1.1 N/mm². The maximum hoop stress developed in the inner cylinder is

a.

3.6 N/mm² compression

b.

3.6 N/mm² tension

c.

7.2 N/mm² compression

d.

7.2 N/mm² tension

Discuss
Answer: (c).7.2 N/mm² compression
Q359.
A connecting rod subjected to an axial load may buckle in the plane of motion of the connecting rod.

a.

Correct

b.

Incorrect

c.

Can't say

d.

None of these

Discuss
Answer: (a).Correct
Q360.
In a turnbuckle, if one of the rods has left hand threads, then the other rod will have

a.

right hand threads

b.

left hand threads

c.

multiple threads

d.

pointed threads

Discuss
Answer: (a).right hand threads
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