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 52 of 77

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Q511.
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
Q512.
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
Q513.
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
Q514.
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
Q515.
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
Q516.
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
Q517.
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
Q518.
Nominal Pipe Size (NPS) of a pipe less than 12 inches in diameter indicates its

a.

inner diameter

b.

outer diameter

c.

thickness

d.

neither inner nor outer diameter

Discuss
Answer: (d).neither inner nor outer diameter
Q519.
I.D. of 1/4" schedule 40 pipe is 0.364". I.D. of a 1/2" schedule 40 pipe would be __________ inch

a.

4.728

b.

0.5

c.

0.622

d.

0.474

Discuss
Answer: (c).0.622
Q520.
A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by

a.

decreasing the size of the inlet pipe.

b.

increasing the size of the inlet pipe.

c.

lowering the pump position.

d.

both (b) and (c).

Discuss
Answer: (d).both (b) and (c).
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