Bennett Mechanical Comprehension Practice Test 2025 – The Complete All-in-One Guide to Exam Success!

When a larger wheel drives a smaller wheel in a belt system, the smaller wheel indeed rotates faster. This outcome is a result of the principles of rotational motion and the relationship between the sizes of the wheels.

In a belt system, the belt moves with a constant speed, and the distance covered by the belt in one rotation is determined by the circumference of the larger wheel. Since the radius of the smaller wheel is less than that of the larger wheel, the smaller wheel will complete more rotations than the larger wheel for each rotation of the larger wheel. This leads to the smaller wheel experiencing a higher rotational speed, thus resulting in faster movement.

This principle is commonly observed in various mechanical systems, such as bicycles and pulleys, where the drive mechanism's speed is adjusted to achieve efficient power transfer. The other outcomes, such as the larger wheel rotating faster or both wheels rotating at the same speed, do not align with how rotational dynamics function in this context.