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.

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Heat Transfer Basics MCQs | Page 6 of 53

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Q51.
In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient

a.

increases

b.

decreases

c.

is not affected

d.

may increase or decrease; depends on the feed

Discuss
Answer: (b).decreases
Q52.
The steam ejector is used to

a.

remove condensate from the steam pipelines.

b.

create vacuum.

c.

superheat the steam.

d.

none of these.

Discuss
Answer: (b).create vacuum.
Q53.
For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area

a.

increases

b.

decreases

c.

remains constant

d.

passes through a maxima

Discuss
Answer: (d).passes through a maxima
Q54.
The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)R and the co-efficient of performance as a heat pump (COP)HP are

a.

(COP)R = (COP)HP = 0.6

b.

(COP)R = 2.5; (COP)HP = 1.5

c.

(COP)R = 1.5; (COP)HP = 2.5

d.

(COP)R = (COP)HP = 2.5

Discuss
Answer: (c).(COP)R = 1.5; (COP)HP = 2.5
Q55.
Crystal size in a continuous crystalliser depends upon the

a.

rate of heat transfer.

b.

degree of turbulence.

c.

degree of supersaturation.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q56.
Heat waves

a.

can not pass through vacuum.

b.

travel in straight line.

c.

can be reflected by a mirror.

d.

both (b) and (c).

Discuss
Answer: (d).both (b) and (c).
Q57.
Air is best heated with steam in a heat exchanger of

a.

plate type.

b.

double pipe type with fin on steam side.

c.

double pipe type with fin on air side.

d.

shell and tube type.

Discuss
Answer: (c).double pipe type with fin on air side.
Q58.
Which of the following is generally considered as opaque surface towards radiations?

a.

Gases

b.

Solids

c.

Liquids

d.

Both (b) and (c)

Discuss
Answer: (d).Both (b) and (c)
Q59.
Black liquor generated during paper manufacture is concentrated in a

a.

single effect evaporator.

b.

single effect evaporator followed by a crystalliser.

c.

multiple effect evaporator.

d.

multiple effect evaporators followed by a crystalliser.

Discuss
Answer: (c).multiple effect evaporator.
Q60.
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
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