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.
An ideal fluid is

a.

non-viscous

b.

incompressible

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q152.
In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature )

a.

1/√T

b.

1/T

c.

√T

d.

T

Discuss
Answer: (c).√T
Q153.
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is

a.

Q/2

b.

Q/4

c.

Q/8

d.

Q/16

Discuss
Answer: (d).Q/16
Q154.
Cd, C and Cv are related (for flow through an orifice) as
(where, Cd = discharge co-efficient
Cc = co-efficient of contraction = area of jet at vena-contracta / area of opening
Cv = co-efficient of velocity = actual velocity at vena-contracta / Theoretical velocity )

a.

Cd = Cc/Cv

b.

Cd = Cc.Cv

c.

Cd = Cv/Cc

d.

none of these

Discuss
Answer: (b).Cd = Cc.Cv
Q155.
In an incompressible fluid, the density is

a.

greatly affected by moderate changes in pressure.

b.

greatly affected only by moderate changes in temperature.

c.

not affected with moderate change in temperature & pressure.

d.

sensible to changes in both temperature & pressure.

Discuss
Answer: (c).not affected with moderate change in temperature & pressure.
Q156.
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.
Q157.
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.
Q158.
Priming is needed in a __________ pump.

a.

reciprocating

b.

gear

c.

centrifugal

d.

diaphragm

Discuss
Answer: (c).centrifugal
Q159.
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).
Q160.
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
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