Heat Transfer When warm and cold liquids are mixed, the heat transfer is mainly by convection conduction radiation none of the listed here convection conduction radiation none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of evaporators, liquid entrainment results primarily due to foaming of the solution high vacuum in the evaporator high heat transfer rate high heat transfer rate foaming of the solution high vacuum in the evaporator high heat transfer rate high heat transfer rate 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 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 Total heat transfer area of all the effects is -less than that in a single effect evaporator system Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect 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 Total heat transfer area of all the effects is -less than that in a single effect evaporator system Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place Both B & C Between two bodies in physical contact with each other From one part of a body to the another part of the same body Between two bodies not in physical contact with each other Both B & C Between two bodies in physical contact with each other From one part of a body to the another part of the same body Between two bodies not in physical contact with each other ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Presence of a non-condensing gas in a condensing vapour None of the listed here decreases thermal resistance is desirable to increase the film co-efficient increases the rate of condensation None of the listed here decreases thermal resistance is desirable to increase the film co-efficient increases the rate of condensation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multipass heat exchangers are used For low heat load To reduce the pressure drop Because of simplicity of fabrication To obtain higher heat transfer co-efficient and shorter tube For low heat load To reduce the pressure drop Because of simplicity of fabrication To obtain higher heat transfer co-efficient and shorter tube ANSWER DOWNLOAD EXAMIANS APP
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