Heat and Mass Transfer LMTD in case of counter flow heat exchanger as compared to parallel flow heat exchanger is Same Higher Lower Depends on the area of heat exchanger Same Higher Lower Depends on the area of heat exchanger ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following has maximum value of thermal conductivity? Aluminium Copper Brass Steel Aluminium Copper Brass Steel ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated with rubber (k = 0.15 W/mK). The cable is to be located in air (h = 6 W/m²). The critical thickness of insulation will be 800 mm 25 mm 40 mm 160 mm 800 mm 25 mm 40 mm 160 mm ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Moisture would find its way into insulation by vapour pressure unless it is prevented by High vapour pressure A vapour seal Less thermal conductivity insulator High thickness of insulation High vapour pressure A vapour seal Less thermal conductivity insulator High thickness of insulation ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as Emissivity Reflectivity Transmissivity Intensity of radiation Emissivity Reflectivity Transmissivity Intensity of radiation ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The transfer of heat by molecular collision is smallest in Solids Liquids Gases None of these Solids Liquids Gases None of these ANSWER DOWNLOAD EXAMIANS APP
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