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 39 of 53

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Q381.
A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun ?

a.

Yellow paint

b.

White paint

c.

Black paint

d.

Grey paint

Discuss
Answer: (c).Black paint
Q382.
The separation of liquid droplets from the vapor is done by a/an __________ , in the evaporators.

a.

steam ejector

b.

entrainment separator

c.

compressor

d.

vacuum pump

Discuss
Answer: (b).entrainment separator
Q383.
If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will

a.

increase by 1.8 times

b.

decrease by 2²

c.

increase by 2¹⁶

d.

remain unchanged

Discuss
Answer: (c).increase by 2¹⁶
Q384.
A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large.

a.

5 minutes

b.

10 minutes

c.

20 minutes

d.

40 minutes

Discuss
Answer: (a).5 minutes
Q385.
Nucleate boiling is promoted

a.

on polished surfaces

b.

on rough surfaces

c.

in the absence of agitation

d.

none of these

Discuss
Answer: (b).on rough surfaces
Q386.
In forced circulation, the heating element is injected

a.

internally

b.

externally

c.

both (a) and (a)

d.

neither (a) nor (b)

Discuss
Answer: (a).internally
Q387.
If all the conditions and dimensions are same, then the ratio of velocity through the tubes of a double pass heat exchanger to that through the single pass heat exchanger is

a.

1

b.

2

c.

1/2

d.

4

Discuss
Answer: (b).2
Q388.
The equation, Nst = f/2, is the __________ analogy.

a.

Colburn

b.

Reynolds

c.

Prandtl

d.

none of these

Discuss
Answer: (b).Reynolds
Q389.
Boiling point elevation for a strong and concentrated solution is found by Duhring's rule, which states that at the same pressure, the boiling point of a solution is a linear function of the __________ of pure water.

a.

boiling point

b.

dynamic viscosity

c.

kinematic viscosity

d.

density

Discuss
Answer: (a).boiling point
Q390.
Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the

a.

existence of thermal boundary layer.

b.

temperature gradient produced due to density difference

c.

buoyancy of the bubbles produced at active nucleation site.

d.

none of these.

Discuss
Answer: (d).none of these.
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