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 40 of 77

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Q391.
One poise (unit of absolute/dynamic viscosity) is equivalent to one

a.

gm/cm². sec.

b.

gm/cm. sec.

c.

cm²/sec.

d.

m²/sec.

Discuss
Answer: (b).gm/cm. sec.
Q392.
The equation relating friction factor to Reynold number, f^-0.5 = 4 logโ‚‘ (Nส€โ‚‘/โˆšf)^-0.4, is called the __________ equation.

a.

Nikuradse

b.

Von-Karman

c.

Blausius

d.

Colebrook

Discuss
Answer: (a).Nikuradse
Q393.
What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta ?

a.

0.64

b.

1.65

c.

0.32

d.

0.94

Discuss
Answer: (a).0.64
Q394.
For an unstable equilibrium of a floating body (where, M = metacentre.)

a.

M is above G

b.

M is below G

c.

M & G coincide

d.

none of these

Discuss
Answer: (b).M is below G
Q395.
Pressure drop in packed bed for turbulent flow is given by the __________ equation.

a.

Kozney-Karman

b.

Blake-Plummer

c.

Leva's

d.

Hagen-Poiseulle's

Discuss
Answer: (b).Blake-Plummer
Q396.
In the complete turbulence zone (in rough pipes), the

a.

rough and smooth pipes have the same friction factor.

b.

laminar film covers the roughness projections.

c.

friction factor depends upon Nส€โ‚‘ only.

d.

friction factor is independent of the relative roughness.

Discuss
Answer: (d).friction factor is independent of the relative roughness.
Q397.
Which of the following has the minimum compressibility ?

a.

Water at room temperature

b.

Air at room temperature

c.

Oxygen at room temperature

d.

Nitrogen at room temperature

Discuss
Answer: (a).Water at room temperature
Q398.
In case of centrifugal fan or blower, the gas capacity varies as

a.

speed

b.

(speed)²

c.

(speed)³

d.

(speed)^0.5

Discuss
Answer: (a).speed
Q399.
Pick out the wrong statement.

a.

A fluid mass is free from shearing forces, when it is made to rotate with a uniform velocity.

b.

Newton's law of viscosity is not applicable to the turbulent flow of fluid with linear velocity distribution.

c.

Laminar flow of viscous liquids is involved in the lubrication of various types of bearings.

d.

Rise of water in capillary tubes reduces with the increasing diameter of capillary tubes.

Discuss
Answer: (b).Newton's law of viscosity is not applicable to the turbulent flow of fluid with linear velocity distribution.
Q400.
Purpose of relief valve in a reciprocating pump is to

a.

protect the pump against developing excessive pressure.

b.

facilitate unidirectional flow of liquid.

c.

reduce the discharge pressure.

d.

control the rate of discharge.

Discuss
Answer: (a).protect the pump against developing excessive pressure.
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