EXAMIANS
Heat transfer takes place as per
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If the energy radiated per second per sq. cm. of the surface for wave lengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called
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Total heat is the heat required to
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40% of incident radiant energy on the surface of a thermally transparent body is reflected back. If the transmissivity of the body be 0.15, then the emissivity of surface is
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The expression Q = ρ AT4 is called
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The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles due to difference of density caused by temperature of the particle is known as
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The heat transfer from a hot body to a cold body is directly proportional to the surface area and difference of temperatures between the two bodies. This statement is called
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The unit of overall coefficient of heat transfer is
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Thermal diffusivity is a
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Two plates spaced 150 mm apart are maintained at 1000°C and 70°C. The heat transfer will take place mainly by
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