Mechanical Engineering Exam > Mechanical Engineering Questions > A closed container filled with hot coffee in ...
Start Learning for Free
A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?
- a)convection and radiation
- b)radiation only
- c)conduction and radiation
- d)conduction, convection and radiation
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
A closed container filled with hot coffee in a plastic flask is in a r...
Hot coffee is separated from its cooler surroundings by a plastic flask, an air space, and a plastic cover. So all modes of heat transfer.
Most Upvoted Answer
A closed container filled with hot coffee in a plastic flask is in a r...
Possible Modes of Heat Transfer in Cooling of Coffee in a Closed Container Filled with Hot Coffee in a Plastic Flask:
1. Conduction
- Conduction is the transfer of heat energy through a material or between two materials in contact.
- In this scenario, conduction occurs between the hot coffee and the plastic flask, and between the plastic flask and the air molecules in contact with it.
2. Convection
- Convection is the transfer of heat energy through the movement of fluids or gases.
- In this scenario, convection occurs as the air molecules in contact with the plastic flask absorb heat energy through conduction and rise due to the decrease in density, creating a convective current that carries heat away from the flask.
3. Radiation
- Radiation is the transfer of heat energy through electromagnetic waves.
- In this scenario, radiation occurs as the hot coffee emits infrared radiation which is absorbed by the walls of the plastic flask and the surrounding air, causing them to warm up and contribute to the cooling of the coffee.
Conclusion:
All three modes of heat transfer - conduction, convection, and radiation - contribute to the cooling of the hot coffee in the closed container filled with hot coffee in a plastic flask in a room whose air and walls are at a fixed temperature.
1. Conduction
- Conduction is the transfer of heat energy through a material or between two materials in contact.
- In this scenario, conduction occurs between the hot coffee and the plastic flask, and between the plastic flask and the air molecules in contact with it.
2. Convection
- Convection is the transfer of heat energy through the movement of fluids or gases.
- In this scenario, convection occurs as the air molecules in contact with the plastic flask absorb heat energy through conduction and rise due to the decrease in density, creating a convective current that carries heat away from the flask.
3. Radiation
- Radiation is the transfer of heat energy through electromagnetic waves.
- In this scenario, radiation occurs as the hot coffee emits infrared radiation which is absorbed by the walls of the plastic flask and the surrounding air, causing them to warm up and contribute to the cooling of the coffee.
Conclusion:
All three modes of heat transfer - conduction, convection, and radiation - contribute to the cooling of the hot coffee in the closed container filled with hot coffee in a plastic flask in a room whose air and walls are at a fixed temperature.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
|
Explore Courses for Mechanical Engineering exam
|
|
Similar Mechanical Engineering Doubts
Top Courses for Mechanical EngineeringView all
A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer?
Question Description
A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer?.
A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer?.
Solutions for A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?a)convection and radiationb)radiation onlyc)conduction and radiationd)conduction, convection and radiationCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
|
|
Explore Courses for Mechanical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup