Heat Transfer In counter flow compared to parallel flow, LMTD is greater Less surface area is required for a given heat transfer rate Both A and B More surface area is required for a given heat transfer rate LMTD is greater Less surface area is required for a given heat transfer rate Both A and B More surface area is required for a given heat transfer rate ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Absorptivity and refletivity of a perfect black body are respectively 1 and ? 0 and 0.5 0 and 1 1 and 0 1 and ? 0 and 0.5 0 and 1 1 and 0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a vertical tube evaporator, with increase in the liquor level, the __________ is increased. Neither A and B Both A and B Liquor-film co-efficient Velocity of circulation Neither A and B Both A and B Liquor-film co-efficient Velocity of circulation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a Factor of safety None of these Non-dimensional factor Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient Factor of safety None of these Non-dimensional factor Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In an extended surface heat exchanger, fluid having lower co-efficient Flows through the tube Flows outside the tubes Can flow either inside or outside the tubes Should not be used as it gives very high pressure drop Flows through the tube Flows outside the tubes Can flow either inside or outside the tubes Should not be used as it gives very high pressure drop ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of heat transfer by conduction in a hollow cylinder, __________ mean area is used to calculate the heat transfer rate. Geometric Either A, B or C Logarithmic Arithmetic Geometric Either A, B or C Logarithmic Arithmetic ANSWER DOWNLOAD EXAMIANS APP
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