Heat Transfer Vacuum is generally maintained in the vapour space of an evaporator mainly to Concentrate heat sensitive materials Get economical temperature difference by using moderate pressure steam Facilitate forward feeding in multiple effect evaporation Achieve very high concentration of the final product Concentrate heat sensitive materials Get economical temperature difference by using moderate pressure steam Facilitate forward feeding in multiple effect evaporation Achieve very high concentration of the final product ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a multiple effect evaporator, the effect of boiling point elevation is to reduce the capacity increase the economy all of the listed here reduce the economy reduce the capacity increase the economy all of the listed here reduce the economy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number (for forced convection heat transfer) is a function of the __________ number. Reynolds Prandtl None of the listed here Both Reynolds & Prandtl Reynolds Prandtl None of the listed here Both Reynolds & Prandtl ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in porosity, the thermal conductivity of a solid substance Decreases Increases May increase or decrease; depends on the solid Remains unchanged Decreases Increases May increase or decrease; depends on the solid Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An insulator should have Less resistance to heat flow Low thermal conductivity A porous structure High thermal conductivity Less resistance to heat flow Low thermal conductivity A porous structure High thermal conductivity 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 temperature follows __________ law. Logarithmic Linear Parabolic Hyperbolic Logarithmic Linear Parabolic Hyperbolic ANSWER DOWNLOAD EXAMIANS APP
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