Heat-transfer Questions Set 3:
What is the dimension of dynamic viscosity?
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What is the maximum theoretical efficiency for a parallel flow heat exchanger?
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The literature of heat transfer generally recognizes how many distinct modes of heat transfer?
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The primary mode of heat transfer in liquids and gases is
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The extended surface used to enhance heat dissipation is called a:
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According to Dulong and Petit's law, the molar specific heat of solids at a high-temperature range varies with the n^th power of absolute temperature. What is the value of n?
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Calculate the heat transfer through a plate with a convective heat transfer coefficient of 9.79 W/m²K, an area of 2 m², and a temperature change of 70°C.
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Which of the following is true about the medium of heat transfer by conduction?
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If we know the value of the heat transfer when the entire surface is maintained at the base temperature, what other parameters are required to find the area-weighted fin efficiency?
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Two long parallel surfaces each with an emissivity of 0.8 are maintained at different temperatures, resulting in radiation heat exchange between them. It is desired to reduce the radiant heat transfer by 75% by inserting thin parallel shields with an emissivity of 1 on both sides. How many shields should be used?
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