Heat Transfer Forced circulation evaporators are normally used for concentrating liquids having Neither A nor B Both A & B Scaling characteristics High viscosity Neither A nor B Both A & B Scaling characteristics High viscosity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number is the ratio of the temperature gradient at the wall to Temperature difference That across the entire pipe Heat flux None of these Temperature difference That across the entire pipe Heat flux None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl number for most of dry gases is about 0.72 150 0.001 70 0.72 150 0.001 70 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer (Cp . μ)/K is termed as the __________ number. Nusselt Grashoff Stanton Prandtl Nusselt Grashoff Stanton Prandtl ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. Remains constant Increases May increase or decrease ; depends on the material Decreases Remains constant Increases May increase or decrease ; depends on the material Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change in temperature is the smallest for Cube Sphere Equal for all the three Cylinder Cube Sphere Equal for all the three Cylinder ANSWER DOWNLOAD EXAMIANS APP
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