EXAMIANS
The value of the wavelength for maximum emissive power is given by
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The automobile radiator is a heat exchanger of
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Radiation is the process of heat transfer in which heat flows from a ________, in a straight line, without affecting the intervening medium.
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Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body)
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Metals are good conductors of heat because
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The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as
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The ratio of surface convection resistance to the internal conduction resistance is known as
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When α is absorptivity, ρ is reflectivity and τ is transmissivity, then for a diathermanous body,
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The amount of heat flow through a body by conduction is
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In counter current flow heat exchanger, the logarithmic temperature difference between the fluids is ________ as compared to parallel flow heat exchanger.
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