Heat and Mass Transfer Reynolds number is the ratio of Energy transferred by convection to that by conduction Inertia force to viscous force Kinematic viscosity to thermal diffusivity None of these Energy transferred by convection to that by conduction Inertia force to viscous force Kinematic viscosity to thermal diffusivity None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A steam pipe is to be lined with two layers of insulating materials of different thermal conductivities. For the minimum heat transfer, One could place either insulation on either side One should take into account the steam temperature before deciding as to which insulation is put where The better insulation must be put outside The better insulation must be put inside One could place either insulation on either side One should take into account the steam temperature before deciding as to which insulation is put where The better insulation must be put outside The better insulation must be put inside ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The rate of heat flow through a body is Q = [kA (T₁ - T₂)]/x. The term x/kA is known as None of these Thermal coefficient Thermal resistance Thermal conductivity None of these Thermal coefficient Thermal resistance Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer 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 Absorptive power None of these Emissive power Emissivity Absorptive power None of these Emissive power Emissivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Wien’s law states that the wave length corresponding to ________ is proportional to the absolute temperature. Maximum energy None of these Minimum energy Both (A) and (B) Maximum energy None of these Minimum energy Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In a heat exchanger with one fluid evaporating or condensing, the surface area required is least in All of these Parallel flow Counter flow Cross flow All of these Parallel flow Counter flow Cross flow ANSWER DOWNLOAD EXAMIANS APP
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