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 72 of 77

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Q711.
Multistage compressors are used in industry, because they

a.

reduce the cost of compressor.

b.

reduce the size requirement.

c.

resemble closely to isothermal compression.

d.

are easy to control.

Discuss
Answer: (c).resemble closely to isothermal compression.
Q712.
The hydrodynamic and thermal boundary layers will merge, when

a.

Prandtl number is one.

b.

Schmidt number tends to infinity.

c.

Nusselt number tends to infinity.

d.

Archimedes number is greater than 10000.

Discuss
Answer: (a).Prandtl number is one.
Q713.
Differential manometer measures the

a.

atmospheric pressure.

b.

sub-atmospheric pressure.

c.

pressure difference between two points.

d.

none of these.

Discuss
Answer: (c).pressure difference between two points.
Q714.
For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively).

a.

G is above B

b.

B is above G

c.

B & G coincide

d.

none of these

Discuss
Answer: (b).B is above G
Q715.
With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss

a.

decreases

b.

increases

c.

remains constant

d.

increases linearly

Discuss
Answer: (c).remains constant
Q716.
The vent valve provided in a liquid handling centrifugal pump is

a.

generally a needle valve.

b.

used to release any gases that might be vapour locking the pump.

c.

helpful in easy removal of samples.

d.

all (a), (b) and (c).

Discuss
Answer: (d).all (a), (b) and (c).
Q717.
The discharge through a semi-circular weir varies as (where, H = Head of liquid.)

a.

H

b.

H²

c.

H^3/2

d.

H^1/2

Discuss
Answer: (b).H²
Q718.
In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)

a.

Vavg

b.

1.2 Vavg

c.

1.5 Vavg

d.

1.8 Vavg

Discuss
Answer: (b).1.2 Vavg
Q719.
Centrifugal compressors compared to reciprocating compressors

a.

require less space.

b.

have quieter operation.

c.

have lower operating costs.

d.

all (a), (b) and (c).

Discuss
Answer: (d).all (a), (b) and (c).
Q720.
For laminar flow of Newtonion fluids through a circular pipe, for a given pressure drop and length & diameter of pipe, the velocity of fluid is proportional to(where, μ = fluid viscosity )

a.

μ

b.

1/μ

c.

√μ

d.

1/√μ

Discuss
Answer: (b).1/μ
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