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 51 of 77

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Q501.
Flow measurement in an open channel is done by a/an

a.

venturimeter

b.

orificemeter

c.

weir

d.

rotameter

Discuss
Answer: (c).weir
Q502.
Newton's law of viscosity relates the

a.

shear stress and velocity.

b.

velocity gradient and pressure intensity.

c.

shear stress and rate of angular deformation in a fluid.

d.

pressure gradient and rate of angular deformation.

Discuss
Answer: (c).shear stress and rate of angular deformation in a fluid.
Q503.
Applicability of Bernoulli's equation is limited to a/an __________ fluid, that does not exchange shaft work with the surroundings.

a.

incompressible

b.

non-viscous

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) and (b)
Q504.
Water is flowing at 1 m/sec through a pipe (of 10 cm I.D) with a right angle bend. The force in Newtons exerted on the bend by water is

a.

10โˆš2ฯ€

b.

5ฯ€/2

c.

5โˆš2ฯ€

d.

5ฯ€/โˆš2

Discuss
Answer: (b).5ฯ€/2
Q505.
The time of oscillation of a floating body is

a.

longer, if metacentric height is increased.

b.

independent of the metacentric height.

c.

dependent on the buoyant forces only.

d.

none of these.

Discuss
Answer: (d).none of these.
Q506.
What is the value of Fanning friction factor ' f ' for smooth pipe at Nส€โ‚‘ = 10โถ approximately ?

a.

0.003

b.

0.01

c.

0.1

d.

0.3

Discuss
Answer: (a).0.003
Q507.
In magnetic flow meters, voltage generation is

a.

due to the motion of conducting fluid through an externally generated uniform field.

b.

proportional to the fluid velocity.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Q508.
When a fluid flows over a solid surface, the

a.

velocity is uniform at any cross-section.

b.

velocity gradient is zero at the solid surface.

c.

resistance between the surface & the fluid is lesser as compared to that between the fluid layers themselves.

d.

velocity is not zero at the solid surface.

Discuss
Answer: (b).velocity gradient is zero at the solid surface.
Q509.
Pick out the wrong statement about cavitation.

a.

Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation.

b.

Cavitation may be caused due to boiling of liquid by decreasing the pressure resulting in formation & collapse of vapor cavities.

c.

Cavitation begins at higher static pressure and lower velocity in larger diameter pipelines resulting in audible noise.

d.

Large scale cavitation can not damage pipeline, restrict fluid flow and damage steam turbine blades.

Discuss
Answer: (d).Large scale cavitation can not damage pipeline, restrict fluid flow and damage steam turbine blades.
Q510.
The maximum delivery pressure of a reciprocating compressor may be about __________ kg/cm².

a.

1000

b.

2000

c.

3000

d.

4000

Discuss
Answer: (d).4000
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