Heat Transfer All analogy equations connecting friction factor and heat transfer co-efficient apply only to Turbulent flow Both A and B Form friction Wall or skin friction Turbulent flow Both A and B Form friction Wall or skin friction 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 Sphere Cylinder Equal for all the three Cube Sphere Cylinder Equal for all the three ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal radiation emitted by a body is proportional to Tn, where T is its absolute temperature. The value of 'n' is exactly 4 for A black body Black painted bodies only Polished bodies only All bodies A black body Black painted bodies only Polished bodies only All bodies ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A composite flat wall of a furnace is made of two materials 'A' and 'B'. The thermal conductivity of 'A' is twice of that of material 'B', while the thickness of layer of 'A' is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material 'A' is 125 150 133 160 125 150 133 160 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In forced convection, the Nusselt number is a function of Re and Gr Pr and Gr Re and Sc Re and Pr Re and Gr Pr and Gr Re and Sc Re and Pr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Intermittant tube cleaning is possible to be done in case of a __________ evaporator. Basket type Calendria Horizontal tube None of these Basket type Calendria Horizontal tube None of these ANSWER DOWNLOAD EXAMIANS APP
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