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 14 of 77

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Q131.
Boundary layer separation occurs when the

a.

pressure reaches a minimum.

b.

cross-section of the channel is reduced.

c.

valve is closed in a pipeline.

d.

velocity of sound is reached.

Discuss
Answer: (b).cross-section of the channel is reduced.
Q132.
The head loss in turbulent flow in a pipe varies

a.

directly as the velocity.

b.

inversely as the square of the velocity.

c.

approximately as the square of the velocity.

d.

inversely as the square of the diameter.

Discuss
Answer: (c).approximately as the square of the velocity.
Q133.
Hydraulic intensifier is used for increasing the

a.

rate of velocity of liquid supply.

b.

rate of flow through delivery pipeline of a pump.

c.

intensity of pressure of the liquid.

d.

momentum rate through delivery pipe.

Discuss
Answer: (c).intensity of pressure of the liquid.
Q134.
Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of

a.

powder & grannular solids

b.

liquids

c.

low melting point semi-solids

d.

all 'a', 'b' & 'c'

Discuss
Answer: (d).all 'a', 'b' & 'c'
Q135.
Euler's equation of motion is a statement expressing

a.

conservation of mass.

b.

conservation of energy.

c.

Newton's first law of motion.

d.

Newton's second law of motion.

Discuss
Answer: (a).conservation of mass.
Q136.
During ageing of fluid carrying pipes, the

a.

pipe becomes smoother with use.

b.

friction factor increases linearly with time.

c.

absolute roughness decreases with time.

d.

absolute roughness increases linearly with time.

Discuss
Answer: (d).absolute roughness increases linearly with time.
Q137.
Which of the following fluid forces are not considered in the Navier-Stoke's equation?

a.

Gravity forces

b.

Viscous forces

c.

Pressure forces

d.

Turbulent forces

Discuss
Answer: (d).Turbulent forces
Q138.
Which of the following may be termed as a variable orifice flowmeter ?

a.

Rotameter

b.

Pitot tube

c.

V-notch

d.

All (a), (b) and (c)

Discuss
Answer: (a).Rotameter
Q139.
In turbulent flow, a rough pipe has the same friction factor as a smooth pipe

a.

in the zone of complete turbulence.

b.

when the roughness projections are much smaller than the thickness of the laminar film.

c.

everywhere in the transition zone.

d.

when the friction factor is independent of the Reynold's number.

Discuss
Answer: (b).when the roughness projections are much smaller than the thickness of the laminar film.
Q140.
Air vessel provided in a reciprocating pump

a.

smoothens the flow by avoiding pulsations.

b.

increases the volumetric efficiency of the pump.

c.

saves the pump from the danger of cavitation.

d.

none of these.

Discuss
Answer: (d).none of these.
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