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 35 of 77

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Q341.
The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the

a.

barometric pressure

b.

speed of the impeller

c.

diameter of the impeller

d.

both (b) and (c)

Discuss
Answer: (a).barometric pressure
Q342.
High specific speed of a pump implies that, it is a/an __________ pump.

a.

centrifugal

b.

mixed flow

c.

axial flow

d.

none of these

Discuss
Answer: (c).axial flow
Q343.
A gas (density = 1.5 kg/m³ , viscosity = 2x 10⁻⁵ kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The pressure drop for another gas, with density of 1.5 kg/m³and viscosity of 3 x 10⁻⁵ kg/m.s flowing at 3 m/s will be

a.

8400 Pa/m

b.

12600 Pa/m

c.

18900 Pa/m

d.

16800 Pa/m

Discuss
Answer: (b).12600 Pa/m
Q344.
Cocks are used to control

a.

water

b.

any liquid

c.

solids

d.

none of these

Discuss
Answer: (b).any liquid
Q345.
If in a flow field, between any two points, then the flow must be

a.

steady, incompressible, irrotational.

b.

steady, compressible, irrotational.

c.

steady, compressible and along a streamline.

d.

unsteady, incompressible, irrotational.

Discuss
Answer: (a).steady, incompressible, irrotational.
Q346.
The dimension of surface tension is

a.

ML⁻²

b.

MT⁻²

c.

MLT⁻²

d.

ML⁻²T

Discuss
Answer: (b).MT⁻²
Q347.
Pick out the correct statement.

a.

Fanning friction factor is inversely proportional to Reynolds number always.

b.

The property of a randomly packed bed (with raschig rings) is given by the ratio of the total volume to the volume of voids in the bed.

c.

Mach number in an incompressible fluid is always unity.

d.

Mach number is given by the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow.

Discuss
Answer: (d).Mach number is given by the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow.
Q348.
The friction factor is

a.

always inversely proportional to the Reynolds number.

b.

not dimensionless.

c.

not dependent on the roughness of the pipe.

d.

none of these.

Discuss
Answer: (d).none of these.
Q349.
The rate of change of moment of momentum represents the __________ by the fluid.

a.

torque applied

b.

force exerted

c.

work done

d.

power developed

Discuss
Answer: (a).torque applied
Q350.
Cd for the orifice plate varies from

a.

0.58 to 0.8

b.

0.93 to 0.98

c.

0.2 to 0.3

d.

0.02 to 0.03

Discuss
Answer: (a).0.58 to 0.8
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