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 ? Sphere Cube Plate All of these Sphere Cube Plate All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which is the most suitable for the concentration of foamy & frothy liquors? Long tube vertical evaporator Open pan evaporator Agitated film evaporator None of these Long tube vertical evaporator Open pan evaporator Agitated film evaporator None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change in temperature is the smallest for Cube Cylinder Equal for all the three Sphere Cube Cylinder Equal for all the three Sphere 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 could be greater or smaller than hd hf = hd hf < hd hf > hd hf could be greater or smaller than hd hf = hd hf < hd hf > hd ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A BTU/hr.ft.2 °F is equal to 1 kcal/hr. m²°C 4.88 kcal/hr. m.2°C None of these 1 kcal/hr. m².°K 1 kcal/hr. m²°C 4.88 kcal/hr. m.2°C None of these 1 kcal/hr. m².°K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.) d1.5 d d2 √d d1.5 d d2 √d ANSWER DOWNLOAD EXAMIANS APP