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.
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

a.

bending stress only

b.

a combination of torsional shear stress and bending

c.

direct shear stress only

d.

a combination of bending stress and direct shear stress

Discuss
Answer: (a).bending stress only
Q352.
In a journal bearing, the load on the bearing is __________ to the axis of the journal.

a.

parallel

b.

perpendicular

c.

Can't say

d.

None of these

Discuss
Answer: (b).perpendicular
Q353.
An imaginary circle which by pure rolling action gives the same motion as the actual gear, is called

a.

addendum circle

b.

dedendum circle

c.

pitch circle

d.

clearance circle

Discuss
Answer: (c).pitch circle
Q354.
When the frictional force helps to apply the brake, then the brake is said to be self-energizing brake.

a.

Correct

b.

Incorrect

c.

Can't say

d.

None of these

Discuss
Answer: (a).Correct
Q355.
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†
Q356.
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
Q357.
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
Q358.
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
Q359.
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
Q360.
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
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