Bennett Mechanical Comprehension Practice Test 2025 - Free Practice Questions and Review Guide

The effectiveness of a gear system is primarily influenced by the number of teeth on each gear. The number of teeth directly affects the gear ratio, which is crucial for determining the torque, speed, and efficiency of the gear system. A higher number of teeth allows for greater torque, but at a lower speed, while fewer teeth provide higher speed but lower torque. This balance is essential for the gear system to perform its intended function effectively, whether that be in mechanical watches, automobiles, or industrial machinery.

While material type and gear shape can also influence the performance and durability of gears, they do not directly dictate the fundamental mechanics of how gears interlock and transmit force. The color of the gear has no bearing on its functionality or effectiveness in a mechanical system. Understanding the relationship between the number of teeth helps in optimizing the gear design for desired outcomes in a mechanical application.