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 71 of 77

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Q701.
The excess of the sum of pressure & velocity heads over the vapor pressure of the liquid at the suction is called the

a.

static submergence.

b.

net positive suction head (NPSH).

c.

cavitation sensitivity.

d.

priming.

Discuss
Answer: (b).net positive suction head (NPSH).
Q702.
Piezometric head is the sum of the __________ heads.

a.

elevation & kinetic energy

b.

elevation & pressure

c.

kinetic energy & pressure

d.

none of these

Discuss
Answer: (b).elevation & pressure
Q703.
Propellers are

a.

axial flow mixers.

b.

low speed impeller.

c.

used for mixingliquids of high viscosity.

d.

radial flow mixers.

Discuss
Answer: (a).axial flow mixers.
Q704.
Which of the following is not an advantage of fluidisation from transfer operation point of view?

a.

Intimate contact of the fluid with all parts of the solid particles.

b.

Lower fluid pumping power requirement.

c.

Minimisation of temperature variation.

d.

Prevention of particle seggregation.

Discuss
Answer: (b).Lower fluid pumping power requirement.
Q705.
Upto what value of 'Mach number', a fluid may be considered as incompressible ?

a.

0.03

b.

0.3

c.

3

d.

10

Discuss
Answer: (b).0.3
Q706.
The head developed by a centrifugal pump is largely determined by the

a.

power of the pump.

b.

nature of the liquid being pumped.

c.

angle of the vanes and the speed of the tip of the impeller.

d.

vapour pressure of the liquid.

Discuss
Answer: (c).angle of the vanes and the speed of the tip of the impeller.
Q707.
Pick out the wrong statement:

a.

Greater is the kinematic viscosity of the liquid, greater is the thickness of the boundary layer.

b.

Blowers develop a maximum pressure of 2 atmospheres.

c.

Friction losses in pipe fittings are generally expressed in terms of velocity heads.

d.

Fanning friction factor in case of turbulent flow of liquids in pipe depends upon relative roughness & Reynolds number.

Discuss
Answer: (c).Friction losses in pipe fittings are generally expressed in terms of velocity heads.
Q708.
Flow rate of high velocity flue gas discharged through a stack to the atmosphere can be most conveniently measured by a

a.

pitot tube

b.

manometer

c.

rotameter

d.

none of these

Discuss
Answer: (a).pitot tube
Q709.
In frictional fluid flow, the following quantity is

a.

constant along a streamline.

b.

not constant along a streamline.

c.

increased in the direction of flow.

d.

none of these.

Discuss
Answer: (b).not constant along a streamline.
Q710.
What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
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