Heat Transfer Heat exchanger tubes are never made of Copper Lead Plain carbon steel Stainless steel Copper Lead Plain carbon steel Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that Constant temperature gradient exists Boundary surfaces are isothermal There is no internal heat generation Material is anisotropic Constant temperature gradient exists Boundary surfaces are isothermal There is no internal heat generation Material is anisotropic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reynold's analogy states that Nst α NRe NRe α f Nst α f NNu α f Nst α NRe NRe α f Nst α f NNu α f ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer All analogy equations connecting friction factor and heat transfer co-efficient apply only to Both A and B Form friction Wall or skin friction Turbulent flow Both A and B Form friction Wall or skin friction Turbulent flow ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For hot feed, forward feeding as compared to backward feeding results in __________ economy. No effect on Decreased None of these Increased No effect on Decreased None of these Increased 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 Cylinder Sphere Equal for all the three Cube Cylinder Sphere Equal for all the three Cube ANSWER DOWNLOAD EXAMIANS APP
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