Question 358Motor Plants - Assistant Engineer

The correct answer is A) Seventy-five percent of the feedwater entering the unit is removed as brine. This is the correct answer because in a typical desalination process, around 75% of the feedwater entering the unit is removed as brine concentrate, while the remaining 25% is produced as freshwater. This ratio is a common design parameter for desalination systems, as it allows for efficient removal of salts and minerals while maximizing freshwater production. The other options are incorrect because B) suggests the brine removal rate would be faster than feedwater entry, which is not typical; C) states the brine removal is 25%, which is lower than the actual 75% ratio; and D) introduces irrelevant variables that do not directly describe the relationship between feedwater and brine removal.