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!

So, are you ready to put your Heat Transfer Basics knowledge to the test? Let's get started with our carefully curated MCQs!

Heat Transfer Basics MCQs | Page 28 of 53

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Q271.
Terminal point temperature differences between fluids in case of a heat exchanger is termed as

a.

approach.

b.

log mean temperature difference.

c.

arithmetic mean temperature difference.

d.

geometric mean temperature difference.

Discuss
Answer: (a).approach.
Q272.
LMTD can't be used as such without a correction factor for the

a.

multipass heat exchanger.

b.

baffled heat exchanger.

c.

condensation of mixed vapour in a condenser.

d.

all (a) (b) and (c).

Discuss
Answer: (d).all (a) (b) and (c).
Q273.
Fqra cold viscous feed, backward feed gives __________ than forward feed.

a.

a higher capacity

b.

a lower capacity

c.

lower economy

d.

none of these

Discuss
Answer: (a).a higher capacity
Q274.
Walls of a cubical oven are of thickness l, and they are made of material of thermal conductivity k. The temperature inside the oven is 100°C and the inside heat transfer co-efficient is 3k/l. If the wall temperature on the outside is held at 25°C, what is the inside wall temperature in degree centigrade ?

a.

35.5

b.

43.75

c.

81.25

d.

48.25

Discuss
Answer: (c).81.25
Q275.
The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are

a.

Re, Gz

b.

Nu, Pr

c.

Nu, Pr, Re

d.

Nu, Gz

Discuss
Answer: (d).Nu, Gz
Q276.
Heat transfer rate described by Fourier's law will decrease, if the __________ increases.

a.

thermal conductivity

b.

thickness

c.

temperature difference

d.

heat transfer area

Discuss
Answer: (b).thickness
Q277.
A black body does not __________ radiation.

a.

absorb or emit

b.

refract

c.

reflect

d.

both(b) & (c)

Discuss
Answer: (d).both(b) & (c)
Q278.
The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the

a.

solution has an elevation of boiling point.

b.

evaporators operate under vacuum.

c.

evaporators opreate at atmospheric pressure.

d.

none of these.

Discuss
Answer: (a).solution has an elevation of boiling point.
Q279.
Peclet number (Pe) is given by

a.

Pe = Re.Pr

b.

Pe = Re/Pr

c.

Pe = Pr/Re

d.

Pe = Nu.Re

Discuss
Answer: (a).Pe = Re.Pr
Q280.
Nusselt number is the ratio of the

a.

temperature gradient of the wall to that across the entire pipe.

b.

temperature difference to the temperature gradient at the wall.

c.

heat flux at the wall to that across the entire pipe.

d.

none of these

Discuss
Answer: (c).heat flux at the wall to that across the entire pipe.
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