Heat Transfer A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides Higher economy Both A & B Lower economy Lower capacity Higher economy Both A & B Lower economy Lower capacity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl and Reynolds analogy are same, when Prandtl number is 1 1.5 > 2 0.5 1 1.5 > 2 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reynold's analogy states that NNu α f Nst α NRe Nst α f NRe α f NNu α f Nst α NRe Nst α f NRe α f ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Viscosity of gases __________ with increase in temperature. Decrease slowly Remain unaffected Increase slowly Increase very rapidly Decrease slowly Remain unaffected Increase slowly Increase very rapidly ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient Increases Is not affected May increase or decrease; depends on the feed Decreases Increases Is not affected May increase or decrease; depends on the feed Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is 120.36 2.36 Dependent on NRe only 4.36 120.36 2.36 Dependent on NRe only 4.36 ANSWER DOWNLOAD EXAMIANS APP
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