Heat Transfer Multipass heat exchangers are used To reduce the pressure drop For low heat load Because of simplicity of fabrication To obtain higher heat transfer co-efficient and shorter tube To reduce the pressure drop For low heat load Because of simplicity of fabrication To obtain higher heat transfer co-efficient and shorter tube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally Increases exponentially Increases Decreases Remains unchanged Increases exponentially Increases Decreases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a multipass shell and tube heat exchanger, the LMTD correction factor is always > 1 < 1 1 Between 1 & 2 > 1 < 1 1 Between 1 & 2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Evaporator tubes are generally Vertical Horizontal Inclined Random Vertical Horizontal Inclined Random ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If Prandtl number is greater than the Schmidt number, then the concentration boundary layer lies inside the thermal boundary layer none of the listed here thermal & concentration boundary layers are of equal thickness thermal boundary layer lies inside the concentration boundary layer concentration boundary layer lies inside the thermal boundary layer none of the listed here thermal & concentration boundary layers are of equal thickness thermal boundary layer lies inside the concentration boundary layer ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The advantage of backward feed multiple effect evaporators over forward feed units is that Heat sensitive material can be handled There is no additional cost of pumping Equal heat transfer co-efficients exist in various effects Most concentrated liquid is at highest temperature Heat sensitive material can be handled There is no additional cost of pumping Equal heat transfer co-efficients exist in various effects Most concentrated liquid is at highest temperature ANSWER DOWNLOAD EXAMIANS APP
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