Question 101General Subjects - Assistant Engineer
70% to passIn a two stage flash distilling plant, which of the pumps listed is vented to the shell of the second stage in order to remove vapor from the pump suction?
AFeed water heater drain pump
BDistillate pump
CAir ejector condenser drain pump
DCondenser circulating water pump
AI Explanation
The correct answer is B) Distillate pump. In a two-stage flash distilling plant, the distillate pump is vented to the shell of the second stage in order to remove vapor from the pump suction. This is done to prevent cavitation and ensure proper operation of the distillate pump. The other pumps listed, such as the feed water heater drain pump, air ejector condenser drain pump, and condenser circulating water pump, are not vented to the second stage shell and therefore do not serve this purpose.
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