Question 286Motor Plants - Assistant Engineer

The correct answer is D) Sludge discharge cycle. During the sludge discharge cycle, the port "X" shown in the illustration allows water to enter the adjoining chamber. This is because the sludge discharge cycle is designed to expel accumulated sludge from the separator, and the port "X" facilitates this process by allowing water to enter and flush out the sludge. The other answer choices are incorrect because they do not relate to the sludge discharge cycle. The operating backflush cycle, bowl retention cycle, and clarification cycle do not involve the specific function of the port "X" as described in the question.