Heat Transfer Indirect contact heat exchangers are preferred over direct contact heat exchangers, because There is no mist formation There is no risk of contamination Cost of equipment is lower Heat transfer co-efficient are high There is no mist formation There is no risk of contamination Cost of equipment is lower Heat transfer co-efficient are high ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following parameters is increased by use of finned tube in a multipass shell and tube heat exchanger? All of these Effective tube surface area for convective heat transfer Tube side pressure drop and the heat transfer rate Convective heat transfer co-efficient All of these Effective tube surface area for convective heat transfer Tube side pressure drop and the heat transfer rate Convective heat transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer occurs by natural convection because change in temperature causes difference in Density Viscosity Thermal conductivity Heat capacity Density Viscosity Thermal conductivity Heat capacity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The film thickness for laminar film condensation on vertical surface __________ from top to bottom. Cummulatively increases And the surface conductance increase Cummulatively decreases Remains constant Cummulatively increases And the surface conductance increase Cummulatively decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A cube, sphere & a thin circular plate (all having same mass and made of same material) are all heated to 300°C and allowed to cool in natural air. Which one will cool the slowest ? Plate All of these Sphere Cube Plate All of these Sphere Cube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat flux is the time rate of heat transfer per unit length none of the listed here volume area length none of the listed here volume area ANSWER DOWNLOAD EXAMIANS APP
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