Question 618Steam Plants - Assistant Engineer

The correct answer is A) minimize agitation of the oil/water mixture. The disks in a disk-type centrifugal purifier serve to divide the bowl space into multiple separate passages. This helps to minimize agitation of the oil/water mixture, allowing for more efficient separation of the two liquids. By reducing turbulence, the disks promote a calmer flow pattern, which is essential for the purifier to effectively remove suspended particles and separate the oil and water components. The other answer choices are incorrect because they do not accurately describe the primary function of the disks in a centrifugal purifier. Increasing hydraulic head, completely filtering out particles, and preventing bowl spindle vibration are not the main purposes of the disks in this type of purification system.