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 65 of 77

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Q641.
A special type of liquid transporting device is the diffuser pump, in which __________ are minimised.

a.

bearing losses

b.

disk friction

c.

shock losses

d.

cavitation

Discuss
Answer: (c).shock losses
Q642.
Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

a.

2000

b.

10

c.

100

d.

1000

Discuss
Answer: (d).1000
Q643.
Centrifugal pumps as compared to reciprocating pumps

a.

run at a lower speed for the same discharge.

b.

do not need priming.

c.

deliver fluid with pulsating/fluctuating discharge.

d.

can be run with discharge line valve closed for a short interval.

Discuss
Answer: (d).can be run with discharge line valve closed for a short interval.
Q644.
What type of motion the fluid element undergoes, when it changes from one position to another position, such that the angle between the two sides change ?

a.

Rotation

b.

Translation

c.

Linear deformation

d.

Angular deformation

Discuss
Answer: (d).Angular deformation
Q645.
In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant ?

a.

Rotational

b.

Unsteady

c.

Turbulent

d.

Non-uniform

Discuss
Answer: (d).Non-uniform
Q646.
The continuity equation in ideal fluid flow states that

a.

net rate of inflow into any small volume must be zero.

b.

energy is not constant along a streamline.

c.

energy is constant along a streamline.

d.

there exists a velocity potential.

Discuss
Answer: (a).net rate of inflow into any small volume must be zero.
Q647.
Which of the following is most prone to pulsating discharge flow ?

a.

Centrifugal pump

b.

Reciprocating pump

c.

Gear pump

d.

Axial flow pump

Discuss
Answer: (c).Gear pump
Q648.
A streamline is

a.

the line connecting the mid-points of flow cross-sections.

b.

defined for uniform flow only.

c.

drawn normal to the velocity vector at every point.

d.

always the path of a particle.

Discuss
Answer: (c).drawn normal to the velocity vector at every point.
Q649.
Which of the following relationship is valid for the equilibrium position of the float in a rotameter ? (where, Df = Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)

a.

Df + Bf = Wf

b.

Df = Bf + Wf

c.

Df + Bf + Wf =0

d.

none of these

Discuss
Answer: (a).Df + Bf = Wf
Q650.
Drag is defined as the force exerted by the

a.

fluid on the solid in a direction opposite to flow.

b.

fluid on the solid in the direction of flow.

c.

solid on the fluid.

d.

none of these.

Discuss
Answer: (b).fluid on the solid in the direction of flow.
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