Buoyancy and Floatation MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Buoyancy and Floatation, 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 Buoyancy and Floatation 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 Buoyancy and Floatation mcq questions that explore various aspects of Buoyancy and Floatation problems. Each MCQ is crafted to challenge your understanding of Buoyancy and Floatation 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 Buoyancy and Floatation 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 Buoyancy and Floatation. 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 Buoyancy and Floatation knowledge to the test? Let's get started with our carefully curated MCQs!

Buoyancy and Floatation MCQs | Page 1 of 4

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Q1.
In a stationary fluid, how does the local pressure of the fluid vary?

a.

With depth only

b.

In the horizontal direction only

c.

Both with depth and along horizontal direction

d.

Neither with depth nor along horizontal direction

Discuss
Answer: (a).With depth only
Q2.
Which of the following cannot be the value of absolute pressure of a fluid at any point?

a.

0

b.

1.013 bar

c.

– 1 bar

d.

200 bar

Discuss
Answer: (c).– 1 bar
Q3.
A student wants to find the absolute pressure of water at a point below the surface of water. He has a barometer and a manometer pressure gauge. The barometer reads 1.3152 bar where as the manometer pressure gauge reads 0.3152 bar. What is the absolute pressure? (Assume that pressure at one end of the manometer is atmospheric.)

a.

1 bar

b.

1.6304 bar

c.

0.3152 bar

d.

1.3152 bar

Discuss
Answer: (b).1.6304 bar
Q4.
In a U-tube manometer, one end is open to the atmosphere, the other end attached to a pressurized gas of gauge pressure 40 kPa. The height of the fluid column in the atmospheric side is 60 cm, and that on the gas side is 30 cm. The manometic fluid used is: (Take g = 9.8 m/s²).

a.

Water

b.

Liquid ammonia

c.

Oil

d.

Mercury

Discuss
Answer: (d).Mercury
Q5.
In a U-tube mercury manometer, one end is exposed to the atmosphere and the other end is connected to a pressurized gas. The gauge pressure of the gas is found to be 40 kPa. Now, we change the manometric fluid to water. The height difference changes by: (ρmercury = 13600 kg/m³, ρwater = 1000 kg/m³).

a.

1260%

b.

92.64 %

c.

Remains unchanged (0%)

d.

13.6%

Discuss
Answer: (a).1260%
Q6.
A manometric liquid should suitably have _________

a.

Low density and Low Vapour pressure

b.

Low density and High Vapour pressure

c.

High density and Low Vapour pressure

d.

High density and High Vapour pressure

Discuss
Answer: (c).High density and Low Vapour pressure
Q7.
A simple U-tube manometer can measure negative gauge pressures.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q8.
Both ends of a U-tube manometer are exposed to the atmosphere. There exists a possibility that the height difference of the manometer is non-zero. True or False?

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q9.
Find the position of centre of buoyancy for a wooden block of width 3.5 m and depth 1 m, when it floats horizontally in water. The density of wooden block id 850 kg/m³ and its length 7.0 m.

a.

0.95

b.

0.85

c.

1.05

d.

1.65

Discuss
Answer: (b).0.85
Q10.
A stone weighs 450 N in air and 200 N in water. Compute the volume of stone.

a.

.025 m³

b.

.05 m³

c.

.075 m³

d.

None of the mentioned

Discuss
Answer: (a)..025 m³
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