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 17 of 77

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Q161.
Remote control valve is a __________ valve.

a.

gate

b.

butterfly

c.

needle

d.

globe

Discuss
Answer: (b).butterfly
Q162.
Which of the following quantities are computed by using the hydraulic radius for non-circular ducts ?

a.

Velocity and relative roughness.

b.

Head loss and velocity.

c.

Reynold number, relative roughness and head loss.

d.

Reynolds number and friction factor.

Discuss
Answer: (c).Reynold number, relative roughness and head loss.
Q163.
Centre of pressure in an immersed body is __________ the centre of gravity.

a.

above

b.

below

c.

at

d.

either above or below; depends on the liquid density

Discuss
Answer: (b).below
Q164.
The centre of pressure is

a.

always below the centroid of the area.

b.

always above the centroid of the area.

c.

a point on the line of action of the resultant force.

d.

at the centroid of the submerged area.

Discuss
Answer: (c).a point on the line of action of the resultant force.
Q165.
The uniformity of a gas fluidised bed depends upon the __________ of the solid particles.

a.

size

b.

surface properties

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) and (b)
Q166.
A differential pressure cell is used for

a.

measuring small pressure difference in gases.

b.

measuring small pressure difference in liquids.

c.

remote recording of pressure difference.

d.

measuring the difference of the impact & the static pressure.

Discuss
Answer: (c).remote recording of pressure difference.
Q167.
If more than two branches of pipes are to be connected at the same point, then use a/an

a.

elbow

b.

union

c.

tee

d.

none of these.

Discuss
Answer: (c).tee
Q168.
In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the __________ efficiency.

a.

manometric

b.

mechanical

c.

volumetric

d.

overall

Discuss
Answer: (a).manometric
Q169.
Pick out the wrong statement.

a.

The form drag is dependent upon the occurrence of a wake.

b.

The shear stress at any given cross-section of a pipe for steady flow (either laminar or turbulent) varies linearly as the radial distance.

c.

An ideal fluid is the one, which has negligible surface tension and obeys the Newton's law of viscosity.

d.

Existence of the boundary layer in fluid flow is because of viscosity of the fluid.

Discuss
Answer: (c).An ideal fluid is the one, which has negligible surface tension and obeys the Newton's law of viscosity.
Q170.
Mass velocity is independent of temperature & pressure, when the flow is

a.

unsteady through unchanged cross-section.

b.

steady through changing cross-section.

c.

steady and the cross-section is unchanged.

d.

unsteady and the cross-section is changed.

Discuss
Answer: (c).steady and the cross-section is unchanged.
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