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All the three modes of heat transfer are involved in
- a)melting of ice
- b)Cooling of a small metal casting in a quenching bath
- c)heat flow through the walls of a refrigerator
- d)automobile engine equipped with a thermosyphon cooling system
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
All the three modes of heat transfer are involved ina)melting of iceb)...
Heat Transfer in Different Processes
Melting of Ice:
- Involves only one mode of heat transfer, i.e. latent heat transfer
- Heat is absorbed by the ice to break the bonds between molecules and change the phase from solid to liquid
- No conduction or convection involved
Cooling of a Small Metal Casting in a Quenching Bath:
- Involves two modes of heat transfer, i.e. convection and conduction
- Metal casting is immersed in a quenching bath to cool it quickly
- Convection occurs as the cooler liquid in the bath comes in contact with the hot metal casting and carries away the heat
- Conduction occurs as heat is transferred from the hot metal casting to the cooler liquid in the bath
Heat Flow Through the Walls of a Refrigerator:
- Involves only one mode of heat transfer, i.e. conduction
- Heat flows from the warmer environment outside the refrigerator to the cooler environment inside the refrigerator
- The walls of the refrigerator act as a barrier to the heat flow through conduction
Automobile Engine Equipped with a Thermosyphon Cooling System:
- Involves all three modes of heat transfer, i.e. conduction, convection, and radiation
- Heat is generated in the engine due to combustion and friction
- Conduction occurs as the heat is transferred from the engine to the coolant in the engine block
- Convection occurs as the heated coolant rises and cooler coolant sinks, creating a natural circulation of the fluid
- Radiation occurs as the heat is transferred from the engine to the surrounding environment
- The thermosyphon cooling system helps in the efficient transfer of heat and keeps the engine cool
Therefore, option 'D' is the correct answer as it involves all three modes of heat transfer.
Melting of Ice:
- Involves only one mode of heat transfer, i.e. latent heat transfer
- Heat is absorbed by the ice to break the bonds between molecules and change the phase from solid to liquid
- No conduction or convection involved
Cooling of a Small Metal Casting in a Quenching Bath:
- Involves two modes of heat transfer, i.e. convection and conduction
- Metal casting is immersed in a quenching bath to cool it quickly
- Convection occurs as the cooler liquid in the bath comes in contact with the hot metal casting and carries away the heat
- Conduction occurs as heat is transferred from the hot metal casting to the cooler liquid in the bath
Heat Flow Through the Walls of a Refrigerator:
- Involves only one mode of heat transfer, i.e. conduction
- Heat flows from the warmer environment outside the refrigerator to the cooler environment inside the refrigerator
- The walls of the refrigerator act as a barrier to the heat flow through conduction
Automobile Engine Equipped with a Thermosyphon Cooling System:
- Involves all three modes of heat transfer, i.e. conduction, convection, and radiation
- Heat is generated in the engine due to combustion and friction
- Conduction occurs as the heat is transferred from the engine to the coolant in the engine block
- Convection occurs as the heated coolant rises and cooler coolant sinks, creating a natural circulation of the fluid
- Radiation occurs as the heat is transferred from the engine to the surrounding environment
- The thermosyphon cooling system helps in the efficient transfer of heat and keeps the engine cool
Therefore, option 'D' is the correct answer as it involves all three modes of heat transfer.
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Community Answer
All the three modes of heat transfer are involved ina)melting of iceb)...
Heat Transfer in Different Processes
Melting of ice:
- Heat transfer occurs through conduction as the warmer surroundings transfer heat to the ice causing it to melt
- Convection may also be involved as the melted water may move due to density differences
Cooling of a small metal casting in a quenching bath:
- Heat transfer occurs through conduction as the metal casting is in direct contact with the quenching bath
- Convection may also be involved as the fluid in the bath moves due to temperature differences
Heat flow through the walls of a refrigerator:
- Heat transfer occurs through conduction as the temperature difference causes heat to flow through the walls of the refrigerator
- Convection may also be involved as the air inside the refrigerator circulates due to temperature differences
- Radiation may also be involved as the walls of the refrigerator radiate heat
Automobile engine equipped with a thermosyphon cooling system:
- Heat transfer occurs through convection as the hot coolant rises and the cooler coolant sinks, creating a natural circulation
- Conduction may also be involved as heat is transferred from the engine to the coolant
- Radiation may also be involved as the engine and coolant radiate heat to their surroundings
Conclusion:
While all three modes of heat transfer may occur in different processes, the automobile engine equipped with a thermosyphon cooling system involves all three modes of heat transfer.
Melting of ice:
- Heat transfer occurs through conduction as the warmer surroundings transfer heat to the ice causing it to melt
- Convection may also be involved as the melted water may move due to density differences
Cooling of a small metal casting in a quenching bath:
- Heat transfer occurs through conduction as the metal casting is in direct contact with the quenching bath
- Convection may also be involved as the fluid in the bath moves due to temperature differences
Heat flow through the walls of a refrigerator:
- Heat transfer occurs through conduction as the temperature difference causes heat to flow through the walls of the refrigerator
- Convection may also be involved as the air inside the refrigerator circulates due to temperature differences
- Radiation may also be involved as the walls of the refrigerator radiate heat
Automobile engine equipped with a thermosyphon cooling system:
- Heat transfer occurs through convection as the hot coolant rises and the cooler coolant sinks, creating a natural circulation
- Conduction may also be involved as heat is transferred from the engine to the coolant
- Radiation may also be involved as the engine and coolant radiate heat to their surroundings
Conclusion:
While all three modes of heat transfer may occur in different processes, the automobile engine equipped with a thermosyphon cooling system involves all three modes of heat transfer.
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All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer?.
All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer?.
Solutions for All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of All the three modes of heat transfer are involved ina)melting of iceb)Cooling of a small metal casting in a quenching bathc)heat flow through the walls of a refrigeratord)automobile engine equipped with a thermosyphon cooling systemCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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