Transient Heat MCQs

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

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Transient Heat. 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 Transient Heat knowledge to the test? Let's get started with our carefully curated MCQs!

Transient Heat MCQs | Page 2 of 8

Discover more Topics under Heat Transfer

Q11.
The temperature and rate of heat conduction are undoubtedly dependent on
Discuss
Answer: (d).Both time and space coordinates
Q12.
Glass spheres of 2 mm radius and at 500 degree Celsius are to be cooled by exposing them to an air stream at 25 degree Celsius. Find the minimum time required for cooling to a temperature of 60 degree Celsius. Assume the following property values

Density = 2250 kg/m³

Specific heat = 850 J/kg K

Conductivity = 1.5 W/m K
Discuss
Answer: (b).14.78 seconds
Q13.
Which is true regarding lumped system analysis?
(i) Conductive resistance = 0

(ii) Convective resistance = 0

(iii) Thermal conductivity = 0

(iv) Thermal conductivity = infinity

Identify the correct statements
Discuss
Answer: (c).1 and 4
Discuss
Answer: (a).Heating or cooling of fine thermocouple wire due to change in ambient temperature
Discuss
Answer: (d).Attain 63.2% of the value of initial temperature difference
Q16.
A thermocouple junction of spherical form is to be used to measure the temperature of the gas stream. The junction is at 20 degree Celsius and is placed in a gas stream which is at 200 degree Celsius. Make calculations for junction diameter needed for the thermocouple to have thermal time constant of one second.
Assume the thermos-physical properties as given below
k = 20 W/ m K
h = 350 W/m² K
c = 0.4 k J/kg K
p = 8000 kg/m³
Discuss
Answer: (b).0.656 mm
Q17.
A low value of time constant can be achieved for a thermocouple by

(i) Increasing the wire diameter
(ii) Increasing the value heat transfer coefficient
(iii) Use light metals of low density and low specific heat

Identify the correct statements
Discuss
Answer: (a).2 and 3
Q18.
Which of the following has units of time constant?
(Where, P is density, A is area, c is specific heat and V is volume)
Discuss
Answer: (c).p V c/h A
Q19.
β€œThermal radiation suffers no attenuation in a vacuum”. Choose the correct answer
Discuss
Answer: (a).True
Q20.
How does the body temperature falls or rises with time?
Discuss
Answer: (d).Exponentially
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