Heat Transfer What is the emissivity of a black body? 0.9 0.5 1 0.9 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient May increase or decrease; depends on the feed Decreases Increases Is not affected May increase or decrease; depends on the feed Decreases Increases Is not affected ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 0.95 0.78 1 0.95 0.78 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For small temperature difference, the heat transfer rate as per Newton's law of cooling is proportional to (where, Δt = excess temperature) Δt √Δt Δt² Δt³ Δt √Δt Δt² Δt³ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger, floating head is provided to increase the heat transfer area facilitate cleaning of the exchanger increase log mean temperature gradient relieve stresses caused by thermal expansion increase the heat transfer area facilitate cleaning of the exchanger increase log mean temperature gradient relieve stresses caused by thermal expansion ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number (for forced convection heat transfer) is a function of the __________ number. Prandtl None of the listed here Reynolds Both Reynolds & Prandtl Prandtl None of the listed here Reynolds Both Reynolds & Prandtl ANSWER DOWNLOAD EXAMIANS APP
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