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 11 of 77

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Q101.
With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the

a.

velocity increases

b.

pressure decreases

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q102.
Boundary layer separation is characterised by one of the conditions given below, where 'Re' is the Reynolds number for the flow. Select the appropriate conditions.

a.

Re << 1, accelerating flow

b.

Re >> 1, accelerating flow

c.

Re << 1, decelerating flow

d.

Re >>1, decelerating flow

Discuss
Answer: (d).Re >>1, decelerating flow
Q103.
Manometers measure the __________ pressure.

a.

vacuum as well as the atmospheric

b.

difference in

c.

absolute

d.

gage

Discuss
Answer: (b).difference in
Q104.
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.
Q105.
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
Q106.
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
Q107.
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.
Q108.
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.
Q109.
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.

FL⁻²T, ML⁻¹T⁻¹

b.

FLT, ML⁻¹T⁻¹

c.

ML⁻¹T⁻³, F⁻¹L²T

d.

F⁻¹L²T⁻¹, MLT⁻³

Discuss
Answer: (a).FL⁻²T, ML⁻¹T⁻¹
Q110.
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.
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