NCCER Millwright Practice Exam

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What property makes bevel gears suitable for various angles of power transmission?

High friction coefficient
Ability to handle axial loads
Multiple gear teeth
Angular alignment capabilities

The correct answer is: Angular alignment capabilities

Bevel gears are specifically designed to transmit power between shafts that are not parallel, typically at right angles (90 degrees). The characteristic that makes them suitable for various angles of power transmission is their angular alignment capabilities. These gears are constructed in a way that allows them to effectively mesh and transfer motion between shafts oriented at different angles. This aligns with their primary purpose in machinery, where maintaining the proper angle between the driving and driven components is crucial for efficient operation. The ability of bevel gears to be configured for different angles means they can be used in a variety of applications, from automotive gear systems to industrial machinery, thereby enhancing their versatility. This capability is essential for achieving smooth power transfer while accommodating different design requirements and operational geometries.