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 76 of 77

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Q751.
The blades of a centrifugal impeller are said to be curved forward, if the __________ of the motion of impeller blades.

a.

inlet tip of a blade curves in a direction opposite to that

b.

outlet tip of a blade curves in a direction opposite to that

c.

inlet tip of a blade is towards the direction

d.

outlet tip of a blade is towards the direction

Discuss
Answer: (d).outlet tip of a blade is towards the direction
Q752.
For the same terminal conditions and fitting size, the least friction loss is incurred in a/an

a.

T-joint

b.

union

c.

45° elbow

d.

90° bend

Discuss
Answer: (b).union
Q753.
A floating/submerged body is always stable, if its centre of gravity

a.

lies above its centre of buoyancy.

b.

and centre of buoyancy coincide.

c.

lies below its centre of buoyancy.

d.

lies above its meta centre.

Discuss
Answer: (c).lies below its centre of buoyancy.
Q754.
The co-efficient of discharge of an orificemeter is a function of

a.

Reynolds number at the orifice.

b.

ratio of orifice dia to pipe dia.

c.

both (a) and (b).

d.

none of the above parameters, and has a constant value of 0.61.

Discuss
Answer: (c).both (a) and (b).
Q755.
Critical velocity in a pipe flow

a.

increases as fluid viscosity increases.

b.

increases as pipe diameter increases.

c.

independent of fluid density.

d.

none of these.

Discuss
Answer: (b).increases as pipe diameter increases.
Q756.
Which of the following conditions must be satisfied for lift force to be developed ?

a.

The body should be bluff body.

b.

The body should be stream lined.

c.

Circulation around the body is essentially required.

d.

The main stream velocity must approach the velocity of sound in that fluid medium.

Discuss
Answer: (c).Circulation around the body is essentially required.
Q757.
The Reynolds number for an ideal fluid flow is

a.

4

b.

2100-4000

c.

4000

d.

∞

Discuss
Answer: (d).∞
Q758.
The continuity equation of fluid mechanics utilises the principle of conservation of

a.

momentum

b.

mass

c.

energy

d.

both (b) & (c)

Discuss
Answer: (b).mass
Q759.
Stoke's law is valid, when the particle Reynolds number is

a.

< 1

b.

> 1

c.

< 5

d.

none of these

Discuss
Answer: (a).< 1
Q760.
Which of the following is not a dimension-less parameter ?

a.

Pressure-co-efficient

b.

Froude number

c.

Kinematic viscosity

d.

Weber number

Discuss
Answer: (c).Kinematic viscosity
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