A gear drive has a minimum of two gears called ______.

• A. Input and Output
• B. Drive and Driven
• C. Master and Slave
• D. Primary and Secondary

Answer: (B)

In a gear drive, the two gears are described by their roles: the drive gear and the driven gear. The drive gear is connected to the power source and passes torque to the system, while the driven gear is the gear that is powered by the drive gear through meshing teeth. This simple pair forms a basic gear train, and their interaction sets the gear ratio that changes speed and torque between the source and the driven component. The other terms offered aren’t the standard names for the gear pair, whereas drive and driven are the conventional labels for the two gears in a basic gear drive.