Heat Transfer Prandtl number for most of dry gases is about 150 70 0.001 0.72 150 70 0.001 0.72 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Calburn analogy is applicable for the value of Prandtl number from 0.6 to 120 0.5 to 5 0.001 to 1 120 to 400 0.6 to 120 0.5 to 5 0.001 to 1 120 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 Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system 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 Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system 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 Forced circulation evaporators are useful for the concentration of viscous, salting and scale forming liquors. Which of the following is a forced circulation evaporator? Calenderia vertical tube evaporator Long vertical evaporator Agitated film evaporator Horizontal tube evaporator Calenderia vertical tube evaporator Long vertical evaporator Agitated film evaporator Horizontal tube evaporator ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will Remain unchanged Increase by 216 Decrease by 22 Increase by 1.8 times Remain unchanged Increase by 216 Decrease by 22 Increase by 1.8 times ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the Buoyancy of the bubbles produced at active nucleation site None of these Temperature gradient produced due to density difference Existence of thermal boundary layer Buoyancy of the bubbles produced at active nucleation site None of these Temperature gradient produced due to density difference Existence of thermal boundary layer ANSWER DOWNLOAD EXAMIANS APP
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