Heat Transfer Asymptotic conditions is reached, when for a fluid flowing in laminar flow through a long tube Exit-fluid temperature > wall temperature Exit fluid temperature < wall temperature Graetz number > 100 Exit fluid temperature = wall temperature Exit-fluid temperature > wall temperature Exit fluid temperature < wall temperature Graetz number > 100 Exit fluid temperature = wall temperature 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 Steam economy in case of a triple effect evaporator will be < 1 1 Between 0 and 1 > 1 < 1 1 Between 0 and 1 > 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Black liquor generated during paper manufacture is concentrated in a multiple effect evaporators followed by a crystalliser multiple effect evaporator single effect evaporator single effect evaporator followed by a crystalliser multiple effect evaporators followed by a crystalliser multiple effect evaporator single effect evaporator single effect evaporator followed by a crystalliser ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling of milk in an open vessel is an example of __________ boiling. Film Sub-cooled None of these Saturated nucleate Film Sub-cooled None of these Saturated nucleate ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling? Triangular pitch Square pitch Diagonal square pitch None of these Triangular pitch Square pitch Diagonal square pitch None of these ANSWER DOWNLOAD EXAMIANS APP
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