Definitions and Basic Concepts MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Definitions and Basic Concepts, 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 Definitions and Basic Concepts 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 Definitions and Basic Concepts mcq questions that explore various aspects of Definitions and Basic Concepts problems. Each MCQ is crafted to challenge your understanding of Definitions and Basic Concepts 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 Definitions and Basic Concepts MCQs are your pathway to success in mastering this essential Heat Transfer topic.

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Definitions and Basic Concepts MCQs | Page 1 of 3

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Q1.
Consider system A at uniform temperature t and system B at another uniform temperature T (t > T). Let the two systems be brought into contact and be thermally insulated from their surroundings but not from each other. Energy will flow from system A to system B because of

a.

Temperature difference

b.

Energy difference

c.

Mass difference

d.

Volumetric difference

Discuss
Answer: (a).Temperature difference
Q2.
The literature of heat transfer generally recognizes distinct modes of heat transfer. How many modes are there?

a.

One

b.

Two

c.

Three

d.

Four

Discuss
Answer: (c).Three
Q3.
An oil cooler in a high performance engine has an outside surface area 0.12 m² and a surface temperature of 65 degree Celsius. At any intermediate time air moves over the surface of the cooler at a temperature of 30 degree Celsius and gives rise to a surface coefficient equal to 45.4 W/ m² K. Find out the heat transfer rate?

a.

238.43 W

b.

190.68 W

c.

543.67 W

d.

675.98 W

Discuss
Answer: (b).190.68 W
Q4.
Unit of rate of heat transfer is

a.

Joule

b.

Newton

c.

Pascal

d.

Watt

Discuss
Answer: (d).Watt
Q5.
Convective heat transfer coefficient doesn’t depend on

a.

Surface area

b.

Space

c.

Time

d.

Orientation of solid surface

Discuss
Answer: (a).Surface area
Q6.
The rate equation used to describe the mechanism of convection is called Newton’s law of cooling. So rate of heat flow by convection doesn’t depend on

a.

Convective heat transfer coefficient

b.

Surface area through which heat flows

c.

Time

d.

Temperature potential difference

Discuss
Answer: (c).Time
Q7.
How many types of convection process are there?

a.

One

b.

Three

c.

Four

d.

Two

Discuss
Answer: (b).Three
Q8.
Thermal conductivity is maximum for which substance

a.

Silver

b.

Ice

c.

Aluminum

d.

Diamond

Discuss
Answer: (d).Diamond
Q9.
A radiator in a domestic heating system operates at a surface temperature of 60 degree Celsius. Calculate the heat flux at the surface of the radiator if it behaves as a black body

a.

697.2 W/m²

b.

786.9 W/m²

c.

324.7 W/m²

d.

592.1 W/m²

Discuss
Answer: (a).697.2 W/m²
Q10.
Which of the following is an example of forced convection?

a.

Chilling effect of cold wind on a warm body

b.

Flow of water in condenser tubes

c.

Cooling of billets in the atmosphere

d.

Heat exchange on cold and warm pipes

Discuss
Answer: (b).Flow of water in condenser tubes
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