For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then__________________?

Related Mcqs:

With increase in temperature, the thermal conductivity of most liquids_________________?

A. Increases B. Decreases C. Remain same D. First increases upto a certain temperature and then becomes constant...

Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?

A. 0.4 B. 0.5 C. 0.6 D. 0.7...

In a shell and tube heat exchanger, square pitch compared to triangular pitch__________________?

A. Gives a higher shell side pressure drop B. Gives a lower shell side pressure drop C. Can pack more surface area into a shell of given diameter D. None of these...

LMTD for evaporators & condensers for a given terminal parameters & set of conditions for counter-flow is equal to that for parallel flow. In such heat exchangers, with one of the fluids condensing or evaporating, the surface area required is the least in the ______________ flow?

A. Parallel B. Mixed C. Counter flow D. Same in either A , B. or C....

Steam economy in case of a triple effect evaporator will be _________________?

A. 1 B. < 1 C. > 1 D. Between 0 and 1...