Heat Transfer Peclet number (Pe) is given by Pe = Pr/Re Pe = Nu.Re Pe = Re/Pr Pe = Re.Pr Pe = Pr/Re Pe = Nu.Re Pe = Re/Pr Pe = Re.Pr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Calburn analogy is applicable for the value of Prandtl number from 0.001 to 1 0.6 to 120 0.5 to 5 120 to 400 0.001 to 1 0.6 to 120 0.5 to 5 120 to 400 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect Total heat transfer area of all the effects is -less than that in a single effect evaporator system Boiling point elevation in a single effect system is much higher than that in any effect in a multieffect system Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect Total heat transfer area of all the effects is -less than that in a single effect evaporator system Boiling point elevation in a single effect system is much higher than that in any effect in a multieffect system ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient Is not affected May increase or decrease; depends on the feed Increases Decreases Is not affected May increase or decrease; depends on the feed Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is correct ? Resistance = Driving force x Rate Rate = Resistance/Driving force Rate = Driving force x Resistance Driving force = Rate x Resistance Resistance = Driving force x Rate Rate = Resistance/Driving force Rate = Driving force x Resistance Driving force = Rate x Resistance ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Asymptotic conditions is reached, when for a fluid flowing in laminar flow through a long tube 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 Exit fluid temperature = wall temperature ANSWER DOWNLOAD EXAMIANS APP
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