Heat Transfer Presence of a non-condensing gas in a condensing vapour increases the rate of condensation decreases thermal resistance is desirable to increase the film co-efficient None of the listed here increases the rate of condensation decreases thermal resistance is desirable to increase the film co-efficient None of the listed here 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 Cylinder Equal for all the three Sphere Cube Cylinder Equal for all the three Sphere Cube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An ejector is used to None of these Increase pressure Remove condensate Increase temperature None of these Increase pressure Remove condensate Increase temperature 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 Extremely large or small volumes of fluids are generally best routed through the shell side of a shell and tube heat exchanger, because of the Less corrosion problems High heat transfer co-efficient Low pressure drop Flexibility possible in the baffle arrangement Less corrosion problems High heat transfer co-efficient Low pressure drop Flexibility possible in the baffle arrangement ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For large heat transfer area requirement, shell and tube heat exchanger is preferred, because it Occupies smaller space Is easy to operate and maintain All of these Is more economical Occupies smaller space Is easy to operate and maintain All of these Is more economical ANSWER DOWNLOAD EXAMIANS APP
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