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 16 of 77

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Q151.
Check valves are used

a.

at high pressure.

b.

in bends.

c.

for controlling water flow.

d.

for unidirectional flow.

Discuss
Answer: (d).for unidirectional flow.
Q152.
Velocity distribution for flow between two fixed parallel plates

a.

varies parabolically across the section.

b.

is constant over the entire cross-section.

c.

is zero at the plates and increases linearly to the midplane.

d.

none of these.

Discuss
Answer: (a).varies parabolically across the section.
Q153.
Priming is needed in a __________ pump.

a.

reciprocating

b.

gear

c.

centrifugal

d.

diaphragm

Discuss
Answer: (c).centrifugal
Q154.
An ideal nozzle design aims at

a.

minimising wall friction.

b.

suppressing boundary layer separation.

c.

both (a) & (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) & (b).
Q155.
Which of the fluid forces are not considered in the Reynold's equation of flow ?

a.

Viscous forces

b.

Turbulent forces

c.

Pressure forces

d.

Compressibility forces

Discuss
Answer: (d).Compressibility forces
Q156.
For ideally incompressible fluid, the Mach number will be

a.

1.5

b.

1

c.

0

d.

5

Discuss
Answer: (b).1
Q157.
In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas)

a.

1/√M

b.

√M

c.

1/M

d.

M

Discuss
Answer: (a).1/√M
Q158.
Boundary layer separation is caused by the

a.

reduction of pressure to vapour pressure.

b.

boundary layer thickness reducing to zero.

c.

adverse pressure gradient.

d.

reduction of pressure gradient to zero.

Discuss
Answer: (c).adverse pressure gradient.
Q159.
With increase in temperature, the vapor pressure of liquids

a.

increases

b.

increases linearly

c.

decreases

d.

remains constant

Discuss
Answer: (a).increases
Q160.
A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be __________ cms.

a.

17

b.

42

c.

84

d.

1.8

Discuss
Answer: (a).17
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