Fluid Mechanics MCQs

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

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

Fluid Mechanics MCQs | Page 28 of 77

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Q271.
The speed of sound in an ideal gas varies as the

a.

temperature

b.

pressure

c.

density

d.

none of these

Discuss
Answer: (a).temperature
Q272.
The maximum head that can be developed by a single impeller is __________ ft.

a.

25

b.

100

c.

250-300

d.

1000

Discuss
Answer: (c).250-300
Q273.
Hydraulic radius is the ratio of

a.

wetted perimeter to flow area.

b.

flow area to wetted perimeter.

c.

flow area to square of wetted perimeter.

d.

square root of flow area to wetted perimeter.

Discuss
Answer: (b).flow area to wetted perimeter.
Q274.
The unit of bulk modulus of elasticity for a liquid in S.I. unit is

a.

N

b.

N/m

c.

N/m²

d.

N/m³

Discuss
Answer: (c).N/m²
Q275.
Power requirement of fans having constant wheel diameter varies __________ fan speed.

a.

as square of

b.

directly as

c.

as cube of

d.

none of these

Discuss
Answer: (c).as cube of
Q276.
In the low Reynolds number region, the drag force on a sphere is proportional to

a.

V

b.

V²

c.

V⁴

d.

V^0.5

Discuss
Answer: (a).V
Q277.
The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.

a.

1.8

b.

12.4

c.

186.2

d.

736.4

Discuss
Answer: (b).12.4
Q278.
Laminar flow is characterised by the nonexistence of

a.

pressure fluctuation.

b.

eddies.

c.

deviating velocities.

d.

all (a), (b) & (c).

Discuss
Answer: (d).all (a), (b) & (c).
Q279.
The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length.

a.

equivalent

b.

transition

c.

Prandtl mixing

d.

none of these

Discuss
Answer: (b).transition
Q280.
Select the correct practical example of steady non-uniform flow.

a.

Motion of water around a ship in a lake.

b.

Motion of river around bridge piers.

c.

Steadily decreasing flow through a reducing section.

d.

Steadily increasing flow through a pipe.

Discuss
Answer: (c).Steadily decreasing flow through a reducing section.
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