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.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Pressure and Its Measurement. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

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Pressure and Its Measurement MCQs | Page 4 of 7

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Q31.
An oil tank of height 6 m is half-filled with oil and the air above it exerts a pressure of 200 kPa on the upper surface. The density of oil varies according to the relation given below. What will be the percentage error in the calculation of the pressure at the base of the tank if the density is taken to be a constant equal to 800?

a.

0.01

b.

0.05

c.

0.10

d.

0.15

Discuss
Answer: (a).0.01
Q32.
If a gas X be confined inside a bulb as shown, by what percent will the pressure of the gas be higher or lower than the atmospheric pressure? (Take the atmospheric pressure equal to 101.3 kPa)

a.

4.75% higher

b.

4.75% lower

c.

6.75% higher

d.

6.75% lower

Discuss
Answer: (a).4.75% higher
Q33.
A tank of height 3 m is completely filled with water. Now two-third of the liquid is taken out and an equal amount of two other immiscible liquids of specific gravities 0.8 and 1.2 are poured into the tank. By what percent will the pressure at the base of the tank change?

a.

0%

b.

5% higher

c.

5% lower

d.

10% higher

Discuss
Answer: (a).0%
Q34.
A beaker of height h is completely filled with water. Now two-third of the liquid is replaced by another liquid. If the pressure at the base of the beaker doubled, what is the specific gravity of the liquid poured?

a.

0.5

b.

1

c.

2

d.

2.5

Discuss
Answer: (d).2.5
Q35.
A Hydraulic press has a ram of 30 cm diameter and a plunger of of 2 cm diameter. It is used for lifting a weight of 35 kN. Find the force required at the plunger.

a.

233.3 kN

b.

311.1 kN

c.

466.6 kN

d.

155.5 kN

Discuss
Answer: (d).155.5 kN
Q36.
The pressure at a point in the fluid is 4.9 N/cm². Find height when the fluid under consideration is in oil of specific gravity of 0.85.

a.

5.83 m

b.

11.66 m

c.

17.49 m

d.

8.74 m

Discuss
Answer: (a).5.83 m
Q37.
An open tank contains water upto a depth of 350 cm and above it an oil of specific gravity 0.65 for a depth of 2.5 m. Find the pressure intensity at the extreme bottom of the tank.

a.

5.027 N/cm²

b.

10.05 N/cm²

c.

2.51 N/cm²

d.

None of the mentioned

Discuss
Answer: (a).5.027 N/cm²
Q38.
The diameters of a small piston and a large piston of a hydraulic jack are 45 mm and 100 mm respectively.Force of 0.09 kN applied on smaller in size piston. Find load lifted by piston if smaller in size piston is 40 cm above the large piston. The density of fluid is 850 kg/m³.

a.

60 N/cm²

b.

12 N/cm²

c.

30 N/cm²

d.

None of the mentioned

Discuss
Answer: (a).60 N/cm²
Q39.
If fluid is at rest in a container of a narrow mouth at a certain column height and same fluid is at rest at same column height in a container having broad mouth, will the pressure be different at certain depth from fluid surface.

a.

Pressure will be same for both.

b.

Pressure will be more for narrower mouth

c.

Pressure will be less for narrower mouth

d.

None of the mentioned

Discuss
Answer: (a).Pressure will be same for both.
Q40.
We can draw Mohr’s circle for a fluid at rest.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
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