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 65 of 77

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Q641.
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
Q642.
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
Q643.
Volume of liquid displaced by a floating body is equivalent to its

a.

own weight

b.

submerged weight

c.

own volume

d.

submerged volume

Discuss
Answer: (a).own weight
Q644.
The __________ is measured by a piezometric opening.

a.

dynamic pressure

b.

static pressure

c.

total pressure

d.

point velocity

Discuss
Answer: (c).total pressure
Q645.
What is the pipe called which lifts water from a reservoir to a greater height than the initial level in the supply reservoir ?

a.

Penstock

b.

Siphon

c.

Tunnel

d.

Pressure pipeline

Discuss
Answer: (b).Siphon
Q646.
Steady uniform flow is represented by flow through a/an

a.

long pipe at constant rate.

b.

long pipe at decreasing rate.

c.

expanding tube at constant rate.

d.

none of these.

Discuss
Answer: (a).long pipe at constant rate.
Q647.
Pick out the correct statement pertaining to the flow through a converging-diverging tube.

a.

The value of Mach number is always unity at the throat.

b.

No shock wave develops in the tube when the Mach number at exit is greater than unity.

c.

Throughout the converging portion of the tube, the density increases in the downstream direction.

d.

none of these.

Discuss
Answer: (b).No shock wave develops in the tube when the Mach number at exit is greater than unity.
Q648.
Cavitation can be prevented by

a.

suitably designing the pump.

b.

maintaining the suction head sufficiently greater than the vapour pressure.

c.

maintaining suction head = developed head.

d.

maintaining suction head lower than the vapour pressure.

Discuss
Answer: (b).maintaining the suction head sufficiently greater than the vapour pressure.
Q649.
Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will

a.

increase

b.

decrease

c.

remain same

d.

be quadrupled

Discuss
Answer: (a).increase
Q650.
Steady flow occurs, when the

a.

conditions change steadily with time.

b.

conditions are the same at the adjacent points at any instant.

c.

conditions do not change with time at any point.

d.

rate of the velocity change is constant.

Discuss
Answer: (c).conditions do not change with time at any point.
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