Heat Transfer The Grashoff number is defined as the ratio of the inertial to viscous forces. buoyancy to inertial forces buoyancy to surface tension forces buoyancy to viscous forces inertial to viscous forces. buoyancy to inertial forces buoyancy to surface tension forces buoyancy to viscous forces ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number is the ratio of the Heat flux at the wall to that across the entire pipe None of these Temperature difference to the temperature gradient at the wall Temperature gradient of the wall to that across the entire pipe Heat flux at the wall to that across the entire pipe None of these Temperature difference to the temperature gradient at the wall Temperature gradient of the wall to that across the entire pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equation, Nst = f/2, is the __________ analogy. None of these Prandtl Reynolds Colburn None of these Prandtl Reynolds Colburn ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Critical value of the __________ number governs the transition from laminar to turbulent flow in free convection heat transfer. Grashoff Both A & B Reynolds Prandtl & Grashoff Grashoff Both A & B Reynolds Prandtl & Grashoff ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter (D) as (D)0.2 (D)1.8 (D)-0.2 (D)-1.8 (D)0.2 (D)1.8 (D)-0.2 (D)-1.8 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns. 100-1000 0.5-50 0.38-0.78 5-50 100-1000 0.5-50 0.38-0.78 5-50 ANSWER DOWNLOAD EXAMIANS APP
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