Heat-transfer Questions Set 5:
What is the unit of the Biot number?
Solution:
Which of the following is not a mode of heat transfer?
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For which type of bodies does Planck's law hold good?
Solution:
If the heat dissipation for one fin is 377.45 kJ/hour, what is the total heat dissipation for 12 fins?
Solution:
For a metal, the thermal conductivity typically decreases with a rise in temperature. Which of these metals is an exception to this behavior?
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In an air-conditioning system operating at a condenser temperature of 50°C and an evaporator temperature of 10°C, what is the heat rejection factor (HRF)?
Solution:
To determine if a system is applicable for lumped system analysis, which of the following parameters is required?
Solution:
Which of the following mechanical components has significant heat transfer through all three mediums (conduction, convection, and radiation)?
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The given general heat conduction equation is:
∂²T/∂x² + ∂²T/∂y² + ∂²T/∂z² = 0
Determine which category this equation belongs to.
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In which states of matter do the three modes of heat transfer - conduction, convection, and radiation - occur?
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