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.

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Properties of Fluids MCQs | Page 7 of 12

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Q61.
Which one of the following is the correct relation between compressibility Ξ² and Bulk Modulus k?

a.

Ξ² = k

b.

Ξ² = 1/k

c.

Ξ² = 2k

d.

Ξ² = k/2

Discuss
Answer: (b).Ξ² = 1/k
Q62.
Which one of the following is true about Bulk Modulus of elasticity?

a.

it is the ratio of compressive stress to volumetric strain

b.

it is the ratio of compressive stress to linear strain

c.

it is the ratio of tensile stress to volumetric strain

d.

it is the ratio of tensile stress to linear strain

Discuss
Answer: (a).it is the ratio of compressive stress to volumetric strain
Q63.
The value of the Bulk Modulus of elasticity for an incompressible fluid is

a.

zero

b.

unity

c.

infinity

d.

very low

Discuss
Answer: (c).infinity
Q64.
Three fluids 1, 2 and 3 have Bulk Moduli of k1, k2 and k3 respectively. If k1 > k2 > k3, which liquid will have the highest compressibility?

a.

liquid 1

b.

liquid 2

c.

liquid 3

d.

they’ll have equal compressibilities

Discuss
Answer: (c).liquid 3
Q65.
Bulk Modulus, Pressure, Force, Stress – Which one of these won’t have the same unit as the others?

a.

Bulk Modulus

b.

Pressure

c.

Force

d.

Stress

Discuss
Answer: (c).Force
Q66.
The space between two plates (20cm*20cm*1cm), 1 cm apart, is filled with a liquid of viscosity 1 Poise. The upper plate is dragged to the right with a force of 5N keeping the lower plate stationary.
What will be the velocity in m/s of flow at a point 0.5 cm below the lower surface of the upper plate if linear velocity profile is assumed for the flow?

a.

1.25

b.

2.5

c.

12.5

d.

0.25

Discuss
Answer: (c).12.5
Q67.
The graph shows relation between shear stress Z and velocity gradient du/dy of a fluid is given by Z = A * (du/dy)ⁿ where A and n are constants. The graphs are drawn for three values of n. Which one will be the correct relationship between n₁, nβ‚‚ and n₃?

a.

n₁ > nβ‚‚ > n₃

b.

n₁ < nβ‚‚ < n₃

c.

n₁ > n₃ > nβ‚‚

d.

n₁ < n₃ < nβ‚‚

Discuss
Answer: (b).n₁ < nβ‚‚ < n₃
Q68.
A soap film is trapped between a frame and a wire of length 10 cm as shown. If the surface tension is given as 0.0049 N/m, what will be the value of m (in mg) such that the wire remains in equilibrium?

a.

0.1

b.

1

c.

10

d.

100

Discuss
Answer: (d).100
Q69.
Which of the following is the dimension of Bulk Modulus?

a.

[M¹L⁻¹T⁻¹].

b.

[M¹L⁻¹T⁻²].

c.

[M¹L¹T⁻²].

d.

[M¹L¹T⁻¹].

Discuss
Answer: (b).[M¹L⁻¹T⁻²].
Q70.
Which one of the following is the unit of compressibility?

a.

m=N

b.

m²=N

c.

m³=N

d.

it is unitless

Discuss
Answer: (b).m²=N
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