Question 316Motor Plants - Assistant Engineer

The correct answer is C) 92 mm. The graph in the illustration MO-0113 shows the relationship between the specific gravity of the oil and the required regulating ring size to achieve a separating temperature of 167°F. Given that the specific gravity of the oil is 0.98 kg/dm3 at 59°F, the graph indicates that the required regulating ring size is 92 mm. The other answer choices are incorrect because they do not correspond to the correct regulating ring size for the provided specific gravity and separating temperature requirements, as indicated by the graph.