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 ? Cube Sphere Plate All of these Cube Sphere Plate All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In pipe flow, heat is transferred from hot wall to the liquid by Forced convection and conduction Free and forced convection Forced convection only Conduction only Forced convection and conduction Free and forced convection Forced convection only Conduction only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Water is normally used as a coolant in the heat exchange equipments mainly because ofits High fluidity Low viscosity Abundance & high heat capacity Low density High fluidity Low viscosity Abundance & high heat capacity Low density ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The interchange factor for radiation heat transfer from surface 'x' to surface 'y' in case of an infinite parallel planes with emis-sivities εx & εy is given by Εx + εy 1/εx + 1/εy (εx + εy)/(εx + εy - εx . εy) Εx . εy Εx + εy 1/εx + 1/εy (εx + εy)/(εx + εy - εx . εy) Εx . εy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling point elevation of a solution of NaOH Is almost independent of pressure Both B and C Increases rapidly with temperature rise Is almost independent of temperature Is almost independent of pressure Both B and C Increases rapidly with temperature rise Is almost independent of temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then hf = hd hf < hd hf > hd hf could be greater or smaller than hd hf = hd hf < hd hf > hd hf could be greater or smaller than hd ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS