The shaft shown in the illustration has an overall length of 42 inches in addition to the following dimensions of "A" = 8", "B" = 8", "C" = 10", and "D"=8 3/16" The tapered length "X" is __________. GS-0133

Correct Answer: Option B — 7.812 inches

To determine the tapered length 'X', subtract the known segments (A, B, C, and D) from the total shaft length of 42 inches. Calculating 42 - (8 + 8 + 10 + 8.1875) results in 7.8125 inches. This precision is required for machining shafts to meet the specific tolerances of marine propulsion systems.