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 15 of 77

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Q141.
Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter 'd'?

a.

At the centre

b.

At d/4 from the wall

c.

At the wall

d.

At d/8 from the wall

Discuss
Answer: (c).At the wall
Q142.
A mono pump is a __________ pump.

a.

centrifugal

b.

piston

c.

positive acting rotary

d.

a group of vacuum

Discuss
Answer: (c).positive acting rotary
Q143.
Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of __________ flow type.

a.

axial

b.

radial

c.

mixed

d.

none of these

Discuss
Answer: (a).axial
Q144.
The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are

P. Inlet pressure
Q. Compressor rpm
R. Delivery pressure
S. Volumetric flow rate at inlet.

a.

P, Q and R

b.

P and R

c.

R and S

d.

P, Rand S

Discuss
Answer: (a).P, Q and R
Q145.
Theoretical head developed by a centrifugal pump does not depend upon the __________ the impeller.

a.

radius of

b.

speed of

c.

fluid velocity leaving

d.

none of these

Discuss
Answer: (d).none of these
Q146.
An ideal fluid is

a.

non-viscous

b.

incompressible

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q147.
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
Q148.
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
Q149.
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
Q150.
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.
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