Heat Transfer Exam Form
Please complete all sections below. Answer each question carefully and to the best of your ability.
Full Name
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First Name
Last Name
Email Address
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example@example.com
Student ID (if applicable)
Instructions: Read each question carefully. Answer all questions. Use the provided spaces for calculations and explanations.
1. Which of the following is NOT a mode of heat transfer?
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Conduction
Convection
Radiation
Absorption
2. Match the following heat transfer terms with their definitions.
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Rows
Definition
Conduction
Transfer of heat through a solid
Transfer of heat by movement of fluid
Transfer of heat by electromagnetic waves
Convection
Transfer of heat through a solid
Transfer of heat by movement of fluid
Transfer of heat by electromagnetic waves
Radiation
Transfer of heat through a solid
Transfer of heat by movement of fluid
Transfer of heat by electromagnetic waves
3. Calculate the heat transferred (in Joules) if a 2 kg metal block is heated from 20°C to 80°C. The specific heat capacity is 500 J/kg·K. Show your calculation.
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4. The thermal conductivity of a material is measured in:
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W/m·K
J/kg·K
W/m²
K/W
5. Rate your confidence in solving heat transfer problems.
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Not confident
1
2
3
4
Very confident
5
1 is Not confident, 5 is Very confident
6. Briefly explain the difference between steady-state and transient heat transfer.
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7. For a wall with an area of 10 m², thickness of 0.2 m, and thermal conductivity of 0.8 W/m·K, calculate the heat loss per hour if the temperature difference across the wall is 30°C. (Show your answer in Watts and calculation steps.)
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8. Select all factors that affect the rate of convective heat transfer.
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Surface area
Fluid velocity
Temperature difference
Material color
Other
9. Provide a real-world example of heat transfer by radiation.
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