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 Nusselt number is the ratio of the None of these Temperature gradient of the wall to that across the entire pipe Temperature difference to the temperature gradient at the wall Heat flux at the wall to that across the entire pipe None of these Temperature gradient of the wall to that across the entire pipe Temperature difference to the temperature gradient at the wall Heat flux at the wall to that across the entire pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiation heat transfer rates does not depend upon the surface area and temperature of the heat source type of absorbing surface distance between the heat source and the object receiving the heat none of the listed here surface area and temperature of the heat source type of absorbing surface distance between the heat source and the object receiving the heat none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is Maximum Minimum Infinity Zero Maximum Minimum Infinity Zero ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Graetz number is given by mCp/kμ kμ/mCp mCp/kL kL/mCp mCp/kμ kμ/mCp mCp/kL kL/mCp ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Biot number, the characteristic length used is the ratio of the __________ of the solid. Surface area to perimeter Surface area to volume Volume to surface area Perimeter to surface area Surface area to perimeter Surface area to volume Volume to surface area Perimeter to surface area ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS