Heat Transfer A body cools down from 75°C to 70°C in 10 minutes. It will cool down from 70° C to 65° C in __________ minutes. Either B or C, depends on the mass of the body 10 >10 Either B or C, depends on the mass of the body 10 >10 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires None of these Less heating surface More space Lower maintenance cost None of these Less heating surface More space Lower maintenance cost ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is Either more or less ; depends on the nature of vapor Some More Less Either more or less ; depends on the nature of vapor Some More Less ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a vertical tube evaporator, with increase in the liquor level, the __________ is increased. Liquor-film co-efficient Both A and B Neither A and B Velocity of circulation Liquor-film co-efficient Both A and B Neither A and B Velocity of circulation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are Same Different Linearly related Never different Same Different Linearly related Never different ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivity of a conducting solid material depends upon its both temperature & porosity porosity temperature None of the listed here both temperature & porosity porosity temperature None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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