Heat Transfer Vacuum is generally maintained in the vapour space of an evaporator mainly to Achieve very high concentration of the final product Concentrate heat sensitive materials Facilitate forward feeding in multiple effect evaporation Get economical temperature difference by using moderate pressure steam Achieve very high concentration of the final product Concentrate heat sensitive materials Facilitate forward feeding in multiple effect evaporation Get economical temperature difference by using moderate pressure steam ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A graph between __________ is called Wilson plot. 1/v0.8 Vs . U V0.8 Vs . U 1/U Vs . 1/V 1/U Vs . 1/v0.8 1/v0.8 Vs . U V0.8 Vs . U 1/U Vs . 1/V 1/U Vs . 1/v0.8 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Biot number, the characteristic length used is the ratio of the __________ of the solid. Perimeter to surface area Surface area to perimeter Volume to surface area Surface area to volume Perimeter to surface area Surface area to perimeter Volume to surface area Surface area to volume ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A body is called grey if the monochromatic emissivity of the body is Zero Unity Same for all wavelengths Different for all wavelengths Zero Unity Same for all wavelengths Different for all wavelengths ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by Giving the surface a mirror finish Painting the surface white (with aluminium paint) Roughening the surface Painting the surface black Giving the surface a mirror finish Painting the surface white (with aluminium paint) Roughening the surface Painting the surface black ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The unit of conductance in SI unit is W/m² W/°K W/m W/m°K W/m² W/°K W/m W/m°K ANSWER DOWNLOAD EXAMIANS APP
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