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 54 of 77

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Q531.
Navier-Stokes equation is useful in the analysis of __________ fluid flow problems.

a.

non-viscous

b.

viscous

c.

turbulent

d.

rotational

Discuss
Answer: (b).viscous
Q532.
With increase in molecular weight of the gas, the head developed by a centrifugal compressor will

a.

decrease

b.

increase

c.

remain same

d.

unpredictable

Discuss
Answer: (a).decrease
Q533.
Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water coloumn in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm).

a.

H

b.

12.6 H

c.

13.6 H

d.

14.6 H

Discuss
Answer: (b).12.6 H
Q534.
The boundary layer thickness at a given section along a flat plate __________ with increasing Reynold's number.

a.

increases

b.

decreases

c.

remains same

d.

may increase or decrease

Discuss
Answer: (b).decreases
Q535.
Low specific speed of a pump implies that, it is a/an __________ pump.

a.

axial flow

b.

centrifugal

c.

mixed flow

d.

none of these

Discuss
Answer: (b).centrifugal
Q536.
The maximum discharge through a circular channel takes place, when the depth of the fluid flow is __________ times the pipe diameter.

a.

0.25

b.

0.5

c.

0.66

d.

0.95

Discuss
Answer: (d).0.95
Q537.
When the head pumped against is less than the head of the fluid used for pumping, the usual device is a/an

a.

ejector

b.

blower

c.

injector

d.

airlift

Discuss
Answer: (d).airlift
Q538.
Two fluids are flowing through two similar pipes of the same diameter. The Reynold's number is same. For the same flow rate if the viscosity of a fluid is reduced to half the value of the first fluid, the pressure drop will

a.

increase

b.

decrease

c.

remain unchanged

d.

data insufficient to predict relative pressure drop.

Discuss
Answer: (b).decrease
Q539.
What is the value of co-efficient of discharge for square edged circular orifice (for ฮฒ = 0.3 to 0.5) ?

a.

0.61 - 0.63

b.

0.5 - 0.75

c.

0.75 - 0.90

d.

0.35 - 0.55

Discuss
Answer: (a).0.61 - 0.63
Q540.
A lubricant 100 times more viscous than water would have a viscosity (in Pa.s)

a.

0.01

b.

0.1

c.

1

d.

10

Discuss
Answer: (b).0.1
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