Heat Transfer Viscosity of gases __________ with increase in temperature. Increase very rapidly Decrease slowly Increase slowly Remain unaffected Increase very rapidly Decrease slowly Increase slowly Remain unaffected ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For an ideal black body Absorptivity = 1 Transmissivity = 1 Reflectivity = 1 Emissivity = 0 Absorptivity = 1 Transmissivity = 1 Reflectivity = 1 Emissivity = 0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is None of these Zero Same as average heat transfer co-efficient for tube side Infinity None of these Zero Same as average heat transfer co-efficient for tube side Infinity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Indirect contact heat exchangers are preferred over direct contact heat exchangers, because 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 There is no mist formation There is no risk of contamination Cost of equipment is lower 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 Remains unchanged Decreases Increases Increases exponentially Remains unchanged Decreases Increases Increases exponentially ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In which mode of heat transfer, the Biot number is important? Transient heat conduction Natural convection Radiation Forced convection Transient heat conduction Natural convection Radiation Forced convection ANSWER DOWNLOAD EXAMIANS APP
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