Heat Transfer Basics MCQs

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

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

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Heat Transfer Basics MCQs | Page 24 of 53

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Q231.
When vaporisation takes place directly at the heating surface, it is called

a.

film boiling

b.

nucleate boiling

c.

vapour binding

d.

none of these

Discuss
Answer: (b).nucleate boiling
Q232.
Steam consumption in kg/hr in case of an evaporator is given by (where, C & E are capacity the economy of the evaporator respectively)

a.

C/E

b.

E/C

c.

CE

d.

1/CE

Discuss
Answer: (a).C/E
Q233.
With increase in temperature, the thermal conductivity of non-metallic amorphous solids

a.

decreases

b.

increases

c.

remains constant

d.

first decreases upto certain temperature and then increases

Discuss
Answer: (b).increases
Q234.
Fourier's law applies to the heat transfer by

a.

convection

b.

radiation

c.

conduction

d.

all (a), (b) & (c)

Discuss
Answer: (c).conduction
Q235.
The equivalent diameter for pressure drop is __________ that for heat transfer.

a.

smaller than

b.

greater than

c.

equal to

d.

not related with

Discuss
Answer: (a).smaller than
Q236.
Controlling heat transfer film co-efficient is the one, which offers __________ resistance to heat transfer.

a.

no

b.

the least

c.

the largest

d.

lower

Discuss
Answer: (c).the largest
Q237.
The heat flux (from outside to inside) across an insulating wall with thermal conductivity, K= 0.04 W/m.°K and thickness 0.16m is 10 W/m². The temperature of the inside wall is - 5°C. The outside wall temperature is

a.

25°C

b.

30°C

c.

35°C

d.

40°C

Discuss
Answer: (c).35°C
Q238.
Thermal conductivity of a conducting solid material depends upon its

a.

temperature

b.

porosity

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q239.
Pick out the wrong statement.

a.

The controlling resistance in case of heating of air by condensing steam is in the air film.

b.

The log mean temperature difference (LMTD) for counter flow and parallel flow can be theoretically same when any one of the fluids (hot or cold fluid) passes through the heat exchanger at constant temperature.

c.

In case of a 1 - 2 shell and tube heat exchanger, the LMTD correction factor value increases sharply, when a temperature cross occurs.

d.

Phase change in case of a pure fluid at a given pressure from liquid to vapor or vice-versa occurs at saturation temperature.

Discuss
Answer: (c).In case of a 1 - 2 shell and tube heat exchanger, the LMTD correction factor value increases sharply, when a temperature cross occurs.
Q240.
Shell side pressure drop in a shell and tube heat exchanger does not depend upon the

a.

baffle spacing & shell diameter.

b.

tube diameter & pitch.

c.

viscosity, density & mass velocity of shell side fluid.

d.

none of these.

Discuss
Answer: (d).none of these.
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