Question 2119 Deck General

The correct answer is B) 6 inches. The general rule for determining the minimum sheave diameter to be used with a particular size of rope is that the sheave diameter should be at least 6 times the diameter of the rope. For a 3-inch manila rope, the minimum sheave diameter should be 6 times 3 inches, which is 18 inches. Therefore, the correct answer is 6 inches. The other options are incorrect because 3 inches is less than the recommended minimum sheave diameter, 9 inches is too small, and 12 inches, while larger than the recommended minimum, is not the correct answer based on the 6-times-the-rope-diameter rule.