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 47 of 77

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Q461.
For very low pressure and high discharge rate, the compressor used is a/an __________ compressor.

a.

axial

b.

reciprocating

c.

rotary

d.

none of these

Discuss
Answer: (c).rotary
Q462.
Pumping of a corrosive liquid is generally preferred to be done by a __________ pump, as it can be made of a variety of materials including plastics.

a.

piston

b.

gear

c.

positive displacement

d.

sump

Discuss
Answer: (b).gear
Q463.
The main factor on which the behaviour of a mass of fluidised solid depends mainly is the

a.

fluid characteristics

b.

particle size

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) and (b)
Q464.
What is the speed of sound (m/sec) in ordinary water ?

a.

1500

b.

330

c.

1000

d.

3000

Discuss
Answer: (a).1500
Q465.
Two piping system are said to be equivalent, when the __________ are same.

a.

fluid flow rate & friction loss

b.

length & friction factor

c.

diameter & friction factor

d.

length & diameter

Discuss
Answer: (a).fluid flow rate & friction loss
Q466.
The equivalent diameter for fluid flow through square cross section channel of side 'x', for pressure drop calculation purpose is given by

a.

4x

b.

2x

c.

x

d.

√x

Discuss
Answer: (c).x
Q467.
Hydraulic radius of 6" x 12" cross-section, is __________ inches.

a.

2

b.

0.5

c.

1.5

d.

none of these

Discuss
Answer: (a).2
Q468.
Baffles in mixing tanks are provided to

a.

reduce swirling and vortex formation.

b.

increase the structural strength of the tank.

c.

aid in rotational flow.

d.

none of these

Discuss
Answer: (a).reduce swirling and vortex formation.
Q469.
Which of the following equations is valid for laminar flow of a fluid through packed bed?

a.

Fanning equation

b.

Kozney - Karman equation

c.

Hagen-Poiseuille equation

d.

Blake-Plummer equation

Discuss
Answer: (b).Kozney - Karman equation
Q470.
In case of laminar flow of fluid through a circular pipe, the

a.

shear stress over the cross-section is proportional to the distance from the surface of the pipe.

b.

surface of velocity distribution is a paraboloid of revolution, whose volume equals half the volume of circumscribing cylinder.

c.

velocity profile varies hyperbolically and the shear stress remains constant over the cross-section.

d.

average flow occurs at a radial distance of 0.5 r from the centre of the pipe (r = pipe radius).

Discuss
Answer: (b).surface of velocity distribution is a paraboloid of revolution, whose volume equals half the volume of circumscribing cylinder.
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