Heat Exchangers and Mass Transfer MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Heat Exchangers and Mass Transfer, 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 Heat Exchangers and Mass Transfer 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 Exchangers and Mass Transfer mcq questions that explore various aspects of Heat Exchangers and Mass Transfer problems. Each MCQ is crafted to challenge your understanding of Heat Exchangers and Mass Transfer 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 Heat Exchangers and Mass Transfer 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 Heat Exchangers and Mass Transfer. 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 Exchangers and Mass Transfer knowledge to the test? Let's get started with our carefully curated MCQs!

Heat Exchangers and Mass Transfer MCQs | Page 3 of 7

Q21.
Exhaust gases (c P = 1.12 k J/kg K) flowing through a tubular heat exchanger at the rate of 1200 kg/hr are cooled from 400 degree Celsius to 120 degree Celsius. This cooling is affected by water (c P = 4.18 k J/kg K) that enters the system at 10 degree Celsius at the rate of 1500 kg/hr. If the overall heat transfer coefficient is 500 k J/m² hr degree, what heat exchanger area is required to handle the load for parallel flow arrangement?
Discuss
Answer: (d).4.547 m²
Q22.
A steam condenser is transferring 250 k W of thermal energy at a condensing temperature of 65 degree Celsius. The cooling water enters the condenser at 20 degree Celsius with a flow rate of 7500 kg/hr. Calculate the log mean temperature difference
Discuss
Answer: (a).28.25 degree Celsius
Q23.
For what value of end temperature difference ratio, is the arithmetic mean temperature difference 5% higher than the log-mean temperature difference?
Discuss
Answer: (c).2.2
Q24.
A company is heating a gas by passing it through a pipe with steam condensing on the outside. What percentage change in length would be needed if it is proposed to triple the heating capacity?
Discuss
Answer: (a).200%
Q25.
A steam condenser is transferring 250 k W of thermal energy at a condensing temperature of 65 degree Celsius. The cooling water enters the condenser at 20 degree Celsius with a flow rate of 7500 kg/hr. If overall heat transfer coefficient for the condenser surface is 1250 W/m² K, what surface area is required to handle this load?
Discuss
Answer: (d).7.08 m²
Q26.
Exhaust gases (c P = 1.12 k J/kg K) flowing through a tubular heat exchanger at the rate of 1200 kg/hr are cooled from 400 degree Celsius to 120 degree Celsius. This cooling is affected by water (c P = 4.18 k J/kg K) that enters the system at 10 degree Celsius at the rate of 1500 kg/hr. If the overall heat transfer coefficient is 500 k J/m² hr degree, what heat exchanger area is required to handle the load for counter flow arrangement?
Discuss
Answer: (b).3.758 m²
Q27.
What is the value of specific heat for brick in J/kg K?
Discuss
Answer: (a).835
Q28.
Which one is having highest value of specific heat?
Discuss
Answer: (b).Bakelite
Q29.
What is the value of specific heat for asphalt in J/kg K?
Discuss
Answer: (a).920
Q30.
What is the value of specific heat for Bakelite in J/kg K?
Discuss
Answer: (c).1465
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