Bennett Mechanical Comprehension Test 2025 – 400 Free Practice Questions to Pass the Exam

When a small wheel and a big wheel are interlinked, the rotations of one wheel directly affect the other based on their sizing and gearing. In this scenario, as the small wheel rotates 8 times, we need to consider the ratio of their diameters or the respective size difference in terms of gear ratios to determine how many times the big wheel rotates.

In a basic gear system, if the small wheel is significantly smaller than the larger wheel, the small wheel will make more rotations compared to the big wheel for each full rotation it completes.

If we deduce from standard gearing mechanics, the big wheel rotates in the opposite direction to maintain the continuity of motion. When the small wheel rotates 8 times, the larger wheel rotates less frequently due to its larger circumference. The ratio of the rotations can often be represented simply as a fraction based on their size ratio.

In this specific situation, if we assume that the radius of the small wheel is notably smaller than that of the big wheel, a rotation ratio of 4:1 might be inferred, indicating that for every 4 rotations of the small wheel, the big wheel would complete 1 rotation in the opposite direction. Thus, in this scenario, for 8 rotations of the small wheel,