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 31 of 77

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Q301.
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.
Q302.
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
Q303.
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
Q304.
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.
Q305.
Rubber latex is an example of __________ fluid.

a.

dilatent

b.

Newtonion

c.

pseudoplastic

d.

Bingham plastic

Discuss
Answer: (c).pseudoplastic
Q306.
Velocity head on sudden enlargement in a horizontal pipe is converted into __________ head.

a.

elevation

b.

pressure

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (b).pressure
Q307.
The momentum correction factor for the velocity distribution of laminar flow is

a.

1.3

b.

1.66

c.

2.5

d.

none of these

Discuss
Answer: (d).none of these
Q308.
For the same flow rate of a fluid, the pressure drop is the least for

a.

venturimeter

b.

orificemeter

c.

flow-nozzle

d.

ฮ”p is same for all

Discuss
Answer: (a).venturimeter
Q309.
The valve commonly used in pipes larger than 2" dia is a

a.

globe valve

b.

plug-cock

c.

gate valve

d.

check valve

Discuss
Answer: (c).gate valve
Q310.
Foot valves are provided in the suction line of a centrifugal pump to

a.

avoid priming, every time we start the pump.

b.

remove the contaminant present in the liquid.

c.

minimise the fluctuation in discharge.

d.

control the liquid discharge.

Discuss
Answer: (a).avoid priming, every time we start the pump.
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