Heat Transfer Finned tube heat exchangers are used for smaller heat load use metal fins of low thermal conductivity give larger area per tube facilitate very large temperature drop through tube wall are used for smaller heat load use metal fins of low thermal conductivity give larger area per tube facilitate very large temperature drop through tube wall ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A graph between __________ is called Wilson plot. 1/v0.8 Vs . U 1/U Vs . 1/v0.8 V0.8 Vs . U 1/U Vs . 1/V 1/v0.8 Vs . U 1/U Vs . 1/v0.8 V0.8 Vs . U 1/U Vs . 1/V ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Indirect contact heat exchangers are preferred over direct contact heat exchangers, because There is no risk of contamination There is no mist formation Heat transfer co-efficient are high Cost of equipment is lower There is no risk of contamination There is no mist formation Heat transfer co-efficient are high Cost of equipment is lower ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is generally considered as opaque surface towards radiations? Solids Gases Liquids Both solids & liquids Solids Gases Liquids Both solids & liquids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a vertical tube evaporator, with increase in the liquor level, the __________ is increased. Both A and B Velocity of circulation Liquor-film co-efficient Neither A and B Both A and B Velocity of circulation Liquor-film co-efficient Neither A and B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Rate of heat transfer by vaporisation from pools of water is affected by the Nature of heating surface and distribution of bubbles All of these Surface tension of water Viscosity of water Nature of heating surface and distribution of bubbles All of these Surface tension of water Viscosity of water ANSWER DOWNLOAD EXAMIANS APP
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