Heat Transfer For an ideal black body Reflectivity = 1 Transmissivity = 1 Emissivity = 0 Absorptivity = 1 Reflectivity = 1 Transmissivity = 1 Emissivity = 0 Absorptivity = 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A cube, sphere & a thin circular plate (all having same mass and made of same material) are all heated to 300°C and allowed to cool in natural air. Which one will cool the slowest ? Cube Sphere Plate All of these Cube Sphere Plate All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will Either increase or decrease; depends on the coolant flow rate Remain unchanged Decrease Increase Either increase or decrease; depends on the coolant flow rate Remain unchanged Decrease Increase ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Use of transverse baffles in a shell and tube heat exchanger is done to increase the Turbulence of shell side fluid All of these Rate of heat transfer Flow velocity Turbulence of shell side fluid All of these Rate of heat transfer Flow velocity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In the equation Q = UAΔt; Δt is Geometric mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference Logarithmic mean temperature difference Geometric mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference Logarithmic mean temperature difference ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation is promoted on a/an __________ surface. Smooth Coated Oily Glazed Smooth Coated Oily Glazed ANSWER DOWNLOAD EXAMIANS APP
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