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 32 of 77

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Q311.
Power number is the ratio of

a.

drag stress to inertial stress.

b.

inertial stress to drag stress.

c.

inertial stress to gravitational stress.

d.

gravitational stress to drag stress.

Discuss
Answer: (a).drag stress to inertial stress.
Q312.
The frictional resistance in laminar flow does not depend on the

a.

area of surface in contact.

b.

flow velocity.

c.

fluid temperature.

d.

pressure of flow.

Discuss
Answer: (a).area of surface in contact.
Q313.
A venturimeter measures the

a.

velocity head

b.

pressure

c.

point velocity

d.

none of these

Discuss
Answer: (d).none of these
Q314.
Gradually varying fluid flow is an example of __________ flow.

a.

non-steady uniform

b.

non-steady non-uniform

c.

steady uniform

d.

steady non-uniform

Discuss
Answer: (a).non-steady uniform
Q315.
Drag is the force component exerted on an immersed object,

a.

passing the centroid of the body at 60° to the direction of motion.

b.

the component being parallel to the flow direction.

c.

the component being normal to the flow direction.

d.

none of these.

Discuss
Answer: (b).the component being parallel to the flow direction.
Q316.
To handle smaller quantity of fluid at higher discharge pressure, use a __________ pump.

a.

reciprocating

b.

centrifugal

c.

volute

d.

rotary vacuum

Discuss
Answer: (a).reciprocating
Q317.
In area meter (e.g., rotameter), with increase in the fluid flow rate, the

a.

pressure drop increases linearly.

b.

pressure drop is almost constant.

c.

area through which fluid flows does not vary.

d.

none of these.

Discuss
Answer: (b).pressure drop is almost constant.
Q318.
The buoyant force acting on a floating body is dependent on the

a.

viscosity of the liquid.

b.

weight of the liquid displaced.

c.

depth of immersion of the body.

d.

surface tension of the liquid.

Discuss
Answer: (b).weight of the liquid displaced.
Q319.
A Newtonion fluid is that

a.

which follows Newton's law of motion.

b.

which needs a minimum shear, before it starts deforming.

c.

for which shear & deformation are related as ฯ„ = ฮผ(โˆ‚u/โˆ‚y)

d.

none of these.

Discuss
Answer: (c).for which shear & deformation are related as ฯ„ = ฮผ(โˆ‚u/โˆ‚y)
Q320.
A bed consists of particles of density 2000 kg/m³. If the height of the bed is 1.5 metres and its porosity 0.6, the pressure drop required to fluidise the bed by air is

a.

25.61 kPa

b.

11.77 kPa

c.

14.86 kPa

d.

21.13 kPa

Discuss
Answer: (b).11.77 kPa
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