Conduction With Heat Generation MCQs

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

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Conduction With Heat Generation MCQs | Page 1 of 3

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Q1.
In case of heat conduction through plane wall, which one of the following is not a correct assumption?

a.

Steady state

b.

Three dimensional heat flow

c.

Volumetric heat generation must be constant

d.

K must be constant

Discuss
Answer: (b).Three dimensional heat flow
Q2.
If Q X is heat generated in at distance โ€˜xโ€™, then heat conducted out at a distance (x + d x) will be

a.

Q X + 3d (Q X) d x /d x

b.

2Q X + d (Q X) d x /d x

c.

d (Q X) d x /d x

d.

Q X + d (Q X) d x /d x

Discuss
Answer: (d).Q X + d (Q X) d x /d x
Q3.
Notable example of uniform generation of heat within the conducting medium are

(i) Energy of a nuclear reactor

(ii) Liberation of energy due to some exothermic chemical reactions

(iii) Resistance heating in electrical appliances

Which of the statements made above are correct?

a.

1, 2 and 3

b.

1 and 2

c.

1 and 3

d.

Only 2

Discuss
Answer: (a).1, 2 and 3
Q4.
For a plane wall of thickness l with uniformly distributed heat generation q g per unit volume, the temperature tโ‚€ at mid plane is given by

a.

tโ‚€ = q g l²/2k +t w

b.

tโ‚€ = q g l²/4k +t w

c.

tโ‚€ = q g l²/8k +t w

d.

tโ‚€ = q g l²/16k +t w

Discuss
Answer: (c).tโ‚€ = q g l²/8k +t w
Q5.
The temperature drop in a plane wall with uniformly distributed heat generation can be decreased by reducing

a.

Wall thickness

b.

Heat generation rate

c.

Thermal conductivity

d.

Surface area

Discuss
Answer: (a).Wall thickness
Q6.
Consider a slab of thickness ฮด with one side (x = 0) insulated and other side (x = ฮด) maintained at constant temperature. The rate of uniform heat generation within the slab is q g W/m³. Presuming that the heat conduction is in steady state and one dimensional along x direction, the maximum temperature in the slab would occur at x equal

a.

ฮด/2

b.

Zero

c.

ฮด/4

d.

ฮด

Discuss
Answer: (b).Zero
Q7.
There occurs heat conduction and internal heat generation at uniform rate within the conduction medium itself in the following cases
(i) Drying of concrete

(ii) Chemical processes

(iii) Fuel elements in a nuclear reaction

Choose the correct option

a.

1 only

b.

2 only

c.

1 and 3

d.

1, 2 and 3

Discuss
Answer: (d).1, 2 and 3
Q8.
Suppose heat is conducted due to electrons
Where, i = I/A and p is the resistivity, then

a.

q g = 2i² p

b.

q g = 3i² p

c.

q g = i² p

d.

q g = 4i² p

Discuss
Answer: (c).q g = i² p
Q9.
In case when both the surfaces of plane wall are at different temperature, we get an expression i.e.

T MAX โ€“ T W2 /T W1 โ€“ TW2 = (B + 1)²/4B

What is the value of B?

a.

(q g) (ฮด)²/2k (T W1 โ€“ TW2)

b.

(q g) (ฮด)³/3k (T W1 โ€“ TW2)

c.

(q g) (ฮด)โด/4k (T W1 โ€“ TW2)

d.

(q g) (ฮด)โต/5k (T W1 โ€“ TW2)

Discuss
Answer: (a).(q g) (ฮด)²/2k (T W1 โ€“ TW2)
Q10.
Which one of the following materials are quickly heated by applying high frequency?

a.

Textiles

b.

Engines

c.

Rubber

d.

Coal

Discuss
Answer: (a).Textiles
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