Heat Transfer
In a multiple effect evaporator, the effect of boiling point elevation is to

reduce the capacity
all of the listed here
increase the economy
reduce the economy

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Heat Transfer
In a shell and tube heat exchanger,

The temperature drop is inversely proportional to the resistance across which the drop occurs
The temperature drops in the two fluids and the wall are proportional to individual resistances
The relationship is not generalised
There is no relationship between temperature drop and resistance

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