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 9 of 77

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Q81.
The capacity of an accumulator is the maximum

a.

energy which it can store.

b.

discharge which it can deliver.

c.

liquid which it can store.

d.

none of these.

Discuss
Answer: (a).energy which it can store.
Q82.
With increase in the temperature, viscosity of a liquid

a.

increases

b.

decreases

c.

remains constant

d.

may increase or decrease; depends on the liquid

Discuss
Answer: (b).decreases
Q83.
Vena-contracta pressure tapping is at a distance __________ from the position of an orificemeter fitted in a pipe of internal diameter 'd'

a.

d

b.

0.5 d

c.

2d

d.

4d

Discuss
Answer: (b).0.5 d
Q84.
The pump impeller and the turbine runner in a hydraulic torque converter

a.

have the same diameter.

b.

have different diameters.

c.

are directly coupled.

d.

none of these.

Discuss
Answer: (b).have different diameters.
Q85.
Reciprocating pumps compared to centrifugal pumps

a.

deliver liquid at uniform pressure.

b.

can handle slurries more efficiently.

c.

are not subject to air binding.

d.

can be operated with delivery valve closed.

Discuss
Answer: (c).are not subject to air binding.
Q86.
Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively).

a.

FLโป²T, MLโป¹Tโป¹

b.

FLT, MLโป¹Tโป¹

c.

MLโป¹Tโป³, Fโป¹L²T

d.

Fโป¹L²Tโป¹, MLTโป³

Discuss
Answer: (a).FLโป²T, MLโป¹Tโป¹
Q87.
The line of action of the buoyant force passes through the centre of gravity of the

a.

submerged body.

b.

displaced volume of the fluid.

c.

volume of fluid vertically above the body.

d.

horizontal projection of the body.

Discuss
Answer: (b).displaced volume of the fluid.
Q88.
Pick out the wrong statement.

a.

The shear stress at the pipe (dia = D, length = L) wall in case of laminar flow of Newtonion fluids is D/4L .โˆ†p.

b.

In the equation ฯ„.gc = k. (du/dy)โฟ , the value of 'n' for pseudoplastic and dilatant fluids are < 1 and >1 respectively.

c.

Shear stress for Newtonion fluid is proportional to the rate of shear in the direction perpendicular to motion.

d.

With increase in the Mach number >0.6, the drag co-efficient decreases in case of compressible fluids.

Discuss
Answer: (d).With increase in the Mach number >0.6, the drag co-efficient decreases in case of compressible fluids.
Q89.
The friction factor for turbulent flow in a hydraulically smooth pipe

a.

depends only on Reynolds number.

b.

does not depend on Reynolds number.

c.

depends on the roughness.

d.

none of these.

Discuss
Answer: (a).depends only on Reynolds number.
Q90.
The pressure at a point in a fluid is not the same in all directions, when the fluid is viscous and

a.

moving

b.

static

c.

cold

d.

hot

Discuss
Answer: (a).moving
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