Heat Transfer The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. Increases Remains constant May increase or decrease ; depends on the material Decreases Increases Remains constant May increase or decrease ; depends on the material Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is concerned with both heat and mass transfer ? Kutateladze number Nusselt number Lewis relationship Froude number Kutateladze number Nusselt number Lewis relationship Froude number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a multiple effect evaporator, the effect of boiling point elevation is to reduce the capacity all of the listed here reduce the economy increase the economy reduce the capacity all of the listed here reduce the economy increase the economy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer It is not preferable to use superheated steam in evaporators, because of its very none of the listed here low film co-efficient high pressure high temperature none of the listed here low film co-efficient high pressure high temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large. 40 minutes 20 minutes 10 minutes 5 minutes 40 minutes 20 minutes 10 minutes 5 minutes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Forced circulation evaporators are normally used for concentrating liquids having Neither A nor B Scaling characteristics Both A & B High viscosity Neither A nor B Scaling characteristics Both A & B High viscosity ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS