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 30 of 77

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Q291.
Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the

a.

wall roughness.

b.

Reynolds number.

c.

both (a) & (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) & (b).
Q292.
In case of end to end connection of two or more pipes in series, the __________ each pipe.

a.

same rate of flow passes through

b.

head loss is same through

c.

rate of flow in each pipe is proportional to the length of

d.

total flow rate is the sum of flow rate in

Discuss
Answer: (a).same rate of flow passes through
Q293.
Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?

a.

Fanning equation

b.

Blake-Pllummer equation

c.

Hagen-Poiseulle equation

d.

Kozney-Karman equation

Discuss
Answer: (b).Blake-Pllummer equation
Q294.
The flow of gas along a pipe in the direction of decreasing pressure causes decrease in its

a.

viscosity

b.

specific volume

c.

velocity

d.

none of these

Discuss
Answer: (b).specific volume
Q295.
Centrifugal pump can't be used to pump

a.

molten sodium (used as a coolant in Fast Breeder Reactor).

b.

moderately viscous vegetable oil used in soap industry.

c.

thick molten soap at 80°C.

d.

none of the above.

Discuss
Answer: (c).thick molten soap at 80°C.
Q296.
A stream line is

a.

fixed in space in steady flow.

b.

always the path of particle.

c.

drawn normal to the velocity vector at every point.

d.

a line connecting the mid points of flow cross-section.

Discuss
Answer: (a).fixed in space in steady flow.
Q297.
Which of the following must be followed by the flow of a fluid (real or ideal)?

(I) Newton's law of viscosity.
(II) Newton's second law of motion.
(III) The continuity equation.
(IV) Velocity of boundary layer must be zero relative to boundary.
(V) Fluid cannot penetrate a boundary.

a.

I, II, III

b.

II, III, V

c.

I, II, V

d.

II, IV, V

Discuss
Answer: (b).II, III, V
Q298.
Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible ?

a.

< 0.3

b.

> 3

c.

50

d.

1

Discuss
Answer: (a).< 0.3
Q299.
Boundary layer exists in flow

a.

of real fluids.

b.

over flat surfaces only.

c.

in pipes only.

d.

of ideal fluids only.

Discuss
Answer: (a).of real fluids.
Q300.
Rubber latex is an example of __________ fluid.

a.

dilatent

b.

Newtonion

c.

pseudoplastic

d.

Bingham plastic

Discuss
Answer: (c).pseudoplastic
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