Properties of Fluids MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Properties of Fluids, a fundamental topic in the field of Fluid Mechanics. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Properties of Fluids 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 Properties of Fluids mcq questions that explore various aspects of Properties of Fluids problems. Each MCQ is crafted to challenge your understanding of Properties of Fluids principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Fluid Mechanics tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Properties of Fluids MCQs are your pathway to success in mastering this essential Fluid Mechanics topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Properties of Fluids. 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 Properties of Fluids knowledge to the test? Let's get started with our carefully curated MCQs!

Properties of Fluids MCQs | Page 11 of 12

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Q101.
What is the variation of cp, cv and k in case of gases when the temperature increases?

a.

cp and cv decreases with temperature, and k increases

b.

cp and cv increase with temperature, and k decreases

c.

cp and cv increase with temperature, and k increases

d.

cp and cv decreases with temperature, and k decreases

Discuss
Answer: (b).cp and cv increase with temperature, and k decreases
Q102.
Calculate the magnitude of capillary effect in millimeters in a glass tube of 7mm diameter, when immersed in mercury. The temperature of the liquid is 25℃ and the values of surface tension of mercury at 25℃ is 0.51 N/m. The angle of contact for mercury is 130°.

a.

140

b.

280

c.

170

d.

210

Discuss
Answer: (a).140
Q103.
Determine the minimum size of glass tube that can be used to measure water level if the capillary rise in the tube is restricted to 5mm. Consider surface tension of water in contact with air as 0.073 N/m.

a.

5.95mm

b.

11.9mm

c.

2.97mm

d.

4.46mm

Discuss
Answer: (a).5.95mm
Q104.
An oil of vicosity 7 poise is used for lubrication between shaft and sleeve. The diameter of shaft is 0.6 m and it rotates is 360 rpm. Calculate the power lost in oil for a sleeve length of 160mm. The thickness of oil film is 1.0mm.

a.

25.31 kW

b.

50.62 kW

c.

37.97 kW

d.

12.65 kW

Discuss
Answer: (a).25.31 kW
Q105.
Find the capillarity rise or fall if a capillary tube of diameter .03m is immersed in hypothetical fluid with specific gravity 6.5, surface tension 0.25 N/m and angle of contact 147°.

a.

0.44mm fall

b.

0.88mm fall

c.

0.44mm rise

d.

0.88mm rise

Discuss
Answer: (a).0.44mm fall
Q106.
Will capillary rise occur and if it occurs what will be capillary rise if glass capillarity tube is immersed in water and experiment is carried out by astronauts in space.

a.

Capillarity rise will not occur

b.

Capillarity rise will occur infinitely and will come out in form of fountain

c.

Capillarity rise will occur finitely and will be the whole length of tube

d.

None of the mentioned

Discuss
Answer: (c).Capillarity rise will occur finitely and will be the whole length of tube
Q107.
The surface tension of fluid in contact with air at 25℃ is 0.51N/m. The pressure inside a droplet is to be 0.05 N/cm² greater than outside pressure. Determine the diameter of the droplet of water.

a.

4.08mm

b.

8.16mm

c.

2.04mm

d.

None of the mentioned

Discuss
Answer: (a).4.08mm
Q108.
If a fluid of certain surface tension and diameter is used to create a soap bubble and a liquid jet. Which of the two, bubble or liquid jet, will have greater pressure difference on the inside and outside.

a.

Liquid jet

b.

Soap bubble

c.

Both will have same pressure differrence

d.

None of the mentioned

Discuss
Answer: (b).Soap bubble
Q109.
Capillarity fall is reduced if we take the appartus (capillary tube immersed in fluid having acute angle of contact) considerable distance inside the earth( i.e below the earth crust).

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q110.
For liquid fluids will capillarity rise (or fall) increase or decrease with rise in temperature.

a.

Increase

b.

Decrease

c.

Remain constant

d.

First decrease then increase

Discuss
Answer: (b).Decrease
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