Steady State Conduction MCQs

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

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

Steady State Conduction MCQs | Page 3 of 7

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Q21.
“Radiation cannot be affected through vacuum or space devoid of any matter”. True or false

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (b).False
Q22.
A composite slab has two layers having thermal conductivities in the ratio of 1:2. If thickness is same for each layer then the equivalent thermal conductivity of the slab would be

a.

1/3

b.

2/3

c.

2

d.

4/3

Discuss
Answer: (d).4/3
Q23.
A composite wall of a furnace has two layers of equal thickness having thermal conductivities in the ratio 2:3. What is the ratio of temperature drop across the two layers?

a.

2:3

b.

3:2

c.

1:2

d.

log e 2 : log e 3

Discuss
Answer: (b).3:2
Q24.
Typical examples of heat conduction through cylindrical tubes are not found in

a.

Power plants

b.

Oil refineries

c.

Most process industries

d.

Aircrafts

Discuss
Answer: (d).Aircrafts
Q25.
The rate of heat conduction through a cylindrical tube is usually expressed as

a.

Per unit length

b.

Per unit area

c.

Only length

d.

Only area

Discuss
Answer: (a).Per unit length
Q26.
Logarithmic mean area of the cylindrical tube is given as

a.

2πrm

b.

πrml

c.

2πrml

d.

2rml

Discuss
Answer: (c).2πrml
Q27.
A hot fluid is being conveyed through a long pipe of 4 cm outer diameter and covered with 2 cm thick insulation. It is proposed to reduce the conduction heat loss to the surroundings to one-third of the present rate by further covering with same insulation. Calculate the additional thickness of insulation

a.

11 cm

b.

12 cm

c.

13 cm

d.

14 cm

Discuss
Answer: (b).12 cm
Q28.
The heat flow equation through a cylinder of inner radius r1 and outer radius r2 is desired to be written in the same form as that for heat flow through a plane wall. For wall thickness (r₂-r₁) the area will be

a.

A1 + A2/2

b.

A1 + A2

c.

A2 – A1/ log e (A2/A1)

d.

A1 + A2/2 log e (A2/A1)

Discuss
Answer: (a).A1 + A2/2
Q29.
A cylinder of radius r and made of material of thermal conductivity k 1 is surrounded by a cylindrical shell of inner radius r and outer radius 2r. This outer shell is made of a material of thermal conductivity k 2. Net conductivity would be

a.

k 1 + 3 k 2/4

b.

k 1 + k 2/4

c.

k 1 + 3k 2

d.

k 1 + k 2

Discuss
Answer: (a).k 1 + 3 k 2/4
Q30.
For steady state and constant value of thermal conductivity, the temperature distribution associated with radial convection through a cylinder is

a.

Linear

b.

Parabolic

c.

Logarithmic

d.

Exponential

Discuss
Answer: (c).Logarithmic
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