Pressure and Its Measurement MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Pressure and Its Measurement, 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 Pressure and Its Measurement 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 Pressure and Its Measurement mcq questions that explore various aspects of Pressure and Its Measurement problems. Each MCQ is crafted to challenge your understanding of Pressure and Its Measurement 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 Pressure and Its Measurement MCQs are your pathway to success in mastering this essential Fluid Mechanics topic.

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Pressure and Its Measurement MCQs | Page 1 of 7

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Q1.
A beaker half-filled with water is exposed to the atmosphere. If the pressure at points A, B and C as shown are Pa, Pb and Pc respectively, which one of the following will be the relation connecting the three?

a.

Pa > Pb = Pc

b.

Pa > Pb > Pc

c.

Pa < Pb < Pc

d.

Pa < Pb = Pc

Discuss
Answer: (d).Pa < Pb = Pc
Q2.
A beaker is filled with a liquid up to a height h. If A and B are two points, one on the free surface and one at the base as shown, such that the minimum distance between the two is l, what will be the pressure at point B?

a.

ฯgl

b.

ฯgh

c.

ฯg\(\sqrt{l^2 + h^2}\)

d.

ฯg\(\sqrt{l^2 - h^2}\)

Discuss
Answer: (b).ฯgh
Q3.
A beaker of height h is filled with a liquid of density ฯ up to a certain limit. The beaker is rotated by an angle ฮธ such that further increase in the angle will result in over flow of the liquid. If the liquid surface is exposed to the atmosphere, what will be the gauge pressure at point B?

a.

ฯgh

b.

ฯgh sin ฮธ

c.

ฯgh cos ฮธ

d.

ฯgh=2

Discuss
Answer: (c).ฯgh cos ฮธ
Q4.
An arm of a teapot is completely filled with tea (density=ฯ). If the arm has a length of l and is inclined at 30° to the horizontal, what will be the pressure difference between the two points, C at the mouth and D at the base of the arm?

a.

ฯgl

b.

ฯgl/2

c.

โˆš2ฯgl

d.

2ฯgl

Discuss
Answer: (b).ฯgl/2
Q5.
A beaker is filled with a liquid of density ฯโ‚ up to a certain height. The pressure at the base of the beaker id Pb. If the liquid is replaced by an equal volume of another liquid of density ฯโ‚‚, what will be the pressure at the base of the beaker now?

a.

Pb

b.

\(\frac{ฯ1 + ฯ2}{2}\) Pb

c.

\(\frac{ฯ1}{ฯ2}\) Pb

d.

\(\frac{ฯ2}{ฯ1}\) Pb

Discuss
Answer: (d).\(\frac{ฯ2}{ฯ1}\) Pb
Q6.
A beaker is filled with a liquid of density ฯ1 up to a certain height. A is a point, h m downwards from the free surface of the liquid as shown. The liquid is replaced by equal volume of another liquid of density ฯ2. If ฯ1 > ฯ2, how will the pressure at point A change?

a.

remain same

b.

increase

c.

decrease

d.

become zero

Discuss
Answer: (c).decrease
Q7.
A beaker is filled with a liquid of density ฯ1 up to a certain height. A is a point, h m downwards from the free surface such that the pressure at A is P. If the liquid is replaced by equal volume of another liquid of density ฯ2, at what distance from the free surface will the pressure be P now?

a.

h

b.

\(\frac{ฯ1 + ฯ2}{2}\) h

c.

\(\frac{ฯ1}{ฯ2}\) h

d.

\(\frac{ฯ2}{ฯ1}\) h

Discuss
Answer: (c).\(\frac{ฯ1}{ฯ2}\) h
Q8.
A beaker is filled with a liquid of density ฯ up to a height h. If half the liquid is replaced by equal volume of another liquid of twice the density, what will be the change in the base pressure?

a.

increased by ฯgh

b.

decreased by ฯgh

c.

increased by ฯgh=2

d.

decreased by ฯgh=2

Discuss
Answer: (c).increased by ฯgh=2
Q9.
A cuboidal container (each side of 30 cm) is completely filled with water. A is a point, 25 cm above the base such that the pressure at point A is P. At what height (in cm) from the base will the pressure be 2P?

a.

20

b.

15

c.

12.5

d.

10

Discuss
Answer: (a).20
Q10.
A closed tank (of height 5 m) is Partially filled with a liquid as shown. If the pressure of the air above the fluid is 2 bar, find the pressure at the bottom of the tank. Assume the density of the liquid to vary according to the following relation: (where y is the height from the base)

a.

2.12

b.

2.15

c.

2.18

d.

2.5

Discuss
Answer: (c).2.18
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