Heat Transfer Kirchoff's law is applicable to Only volumes and not to surfaces Total radiation only Both A and B Monochromatic radiation only Only volumes and not to surfaces Total radiation only Both A and B Monochromatic radiation only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 0.78 1 0.95 0.78 1 0.95 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body) Independent of T α T⁴ αT α 1/T Independent of T α T⁴ αT α 1/T ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For small temperature difference, the heat transfer rate as per Newton's law of cooling is proportional to (where, Δt = excess temperature) Δt² Δt Δt³ √Δt Δt² Δt Δt³ √Δt ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe? > 0.6 < 0.1 0.5 < 0.5 > 0.6 < 0.1 0.5 < 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Use of transverse baffles in a shell and tube heat exchanger is done to increase the Flow velocity Turbulence of shell side fluid Rate of heat transfer All of these Flow velocity Turbulence of shell side fluid Rate of heat transfer All of these ANSWER DOWNLOAD EXAMIANS APP
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