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.
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.
Q642.
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
Q643.
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.
Q644.
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
Q645.
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.
Q646.
The boundary layer is that part of a moving fluid, in which the fluid velocity is

a.

affected by the fluid flow pressure.

b.

constant.

c.

affected by the presence of a solid boundary.

d.

all (a), (b) and (c).

Discuss
Answer: (c).affected by the presence of a solid boundary.
Q647.
The ratio of the depth of flow to the diameter of the channel for maximum discharge in a circular channel in open channel flow is

a.

0.1

b.

0.55

c.

0.95

d.

1.85

Discuss
Answer: (c).0.95
Q648.
A relief valve

a.

provides back pressure for a cylinder.

b.

unloads a pump.

c.

is a directional control valve.

d.

none of these.

Discuss
Answer: (c).is a directional control valve.
Q649.
An isentropic process is the one, in which

a.

pv = constant

b.

pvสณ = constant

c.

pvสณ = constant, and process is reversible

d.

none of these

Discuss
Answer: (c).pvสณ = constant, and process is reversible
Q650.
The distribution of shear stress in a stream of fluid in a circular tube is

a.

linear with radius for turbulent flow only.

b.

linear with radius for laminar flow only.

c.

linear with radius for both laminar & turbulent flow.

d.

parabolic with radius for both laminar & turbulent flow.

Discuss
Answer: (c).linear with radius for both laminar & turbulent flow.
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