Heat and Mass Transfer The process of heat transfer from one particle of the body to another by the actual motion of the heated particles, is called None of these Radiation Convection Conduction None of these Radiation Convection Conduction ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A non-dimensional number generally associated with natural convection heat transfer is Prandtl number Weber number Nusselt number Grashoff number Prandtl number Weber number Nusselt number Grashoff number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The concept of overall coefficient of heat transfer is used in case of heat transfer by Radiation Convection Conduction Conduction and convection Radiation Convection Conduction Conduction and convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of water _________ with rise in temperature. May increase or decrease depending upon temperature Increases Remain same Decreases May increase or decrease depending upon temperature Increases Remain same Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as U.Cmin Cmin/U U/Cmin U/A.Cmin U.Cmin Cmin/U U/Cmin U/A.Cmin ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer 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) k. (dx/dT) k. A. (dT/dx) k. (dT/dx) k. A. (dx/dT) k. (dx/dT) k. A. (dT/dx) k. (dT/dx) k. A. (dx/dT) ANSWER DOWNLOAD EXAMIANS APP
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