Heat Transfer In counter flow compared to parallel flow, Less surface area is required for a given heat transfer rate More surface area is required for a given heat transfer rate LMTD is greater Both A and B Less surface area is required for a given heat transfer rate More surface area is required for a given heat transfer rate LMTD is greater Both A and B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number (for forced convection heat transfer) is a function of the __________ number. Prandtl Both Reynolds & Prandtl None of the listed here Reynolds Prandtl Both Reynolds & Prandtl None of the listed here Reynolds ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Low thermal conductivity of heat insulating materials is due to its High specific heat High proportion of air space Dense structure None of these High specific heat High proportion of air space Dense structure None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when CPA < CPB CPA > CPB KA < 0.5kB KA>2 kB CPA < CPB CPA > CPB KA < 0.5kB KA>2 kB ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In the equation Q = UAΔt; Δt is 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 Geometric mean temperature difference The difference of average bulk temperatures of hot and cold fluids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 'Duhring's plot' is of use in Extractive distillation Leaching Evaporation Absorption Extractive distillation Leaching Evaporation Absorption ANSWER DOWNLOAD EXAMIANS APP
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