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 66 of 77

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Q651.
A fluid is the one, which

a.

cannot remain at rest under the action of shear force.

b.

continuously expands till it fills any container.

c.

is incompressible.

d.

permanently resists distortion.

Discuss
Answer: (a).cannot remain at rest under the action of shear force.
Q652.
One horsepower is equal to

a.

550 lbf.ft/second

b.

550 kgf.m/second

c.

both (a) and (b)

d.

550 lbf.ft./hr

Discuss
Answer: (a).550 lbf.ft/second
Q653.
A fluid (ΞΌ/ρ = 0.01 cm²/sec) is moving at critical flow condition (NΚ€β‚‘ = 2100) through a pipe of dia 3 cms. Velocity of flow is __________ cm/sec.

a.

7

b.

700

c.

7000

d.

630

Discuss
Answer: (a).7
Q654.
Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, Οƒ = surface tension of mercury)

a.

d

b.

1/d

c.

Οƒ

d.

l/Οƒ

Discuss
Answer: (c).Οƒ
Q655.
The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Ξ”p. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be

a.

Ξ”p

b.

2Ξ”p

c.

Ξ”p²

d.

Ξ”p/2

Discuss
Answer: (b).2Ξ”p
Q656.
Fluid flow in a/an __________ is an example of pressure flow.

a.

partially filled pipeline

b.

pipe

c.

open channel

d.

river.

Discuss
Answer: (b).pipe
Q657.
In the laminar boundary layer flow over a flat plate, the ratio (Ξ΄/x) varies as :(where, 'Ξ΄' is the boundary layer thickness and 'x' is the distance from the leading edge in the direction of flow).

a.

Re

b.

√Re

c.

1/Re

d.

Re^(-1/2)

Discuss
Answer: (d).Re^(-1/2)
Q658.
A rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and rotameter shows the same reading, the flow rate (cc/sec) is

a.

26

b.

42

c.

269

d.

325

Discuss
Answer: (c).269
Q659.
A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m³ ) is to be fluidised by water (density 1000 kg/m³ ). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is

a.

4.4 KPa

b.

2.94 KPa

c.

3.7 KPa

d.

none of these

Discuss
Answer: (a).4.4 KPa
Q660.
Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.

a.

1

b.

10

c.

40

d.

70

Discuss
Answer: (b).10
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