Heat Transfer For concentrating an aqueous solution of a material like anhydrous Na₂SO₄, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator. High pressure Vacuum None of these Backward feed High pressure Vacuum None of these Backward feed 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 If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law. Hyperbolic Linear Parabolic Logarithmic Hyperbolic Linear Parabolic Logarithmic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer (NRe.NPr)(D/L) is called the __________ number None of these Graetz Stanton Peclet None of these Graetz Stanton Peclet ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is generally considered as opaque surface towards radiations? Both solids & liquids Liquids Solids Gases Both solids & liquids Liquids Solids Gases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The unit of heat transfer co-efficient in SI unit is W/m2°K J/M2°K W/m°K J/m°K W/m2°K J/M2°K W/m°K J/m°K ANSWER DOWNLOAD EXAMIANS APP
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