Which option lists correctly the three main components of a belt drive?

• A. Gear, shaft, pulley
• B. Motor, belt, bearing
• C. Driven sheave, drive sheave, belt
• D. Chain, sprocket, belt

Answer: (C)

A belt drive transmits motion by using two pulleys wrapped with a belt. The three main components in this setup are the drive pulley (drive sheave), the driven pulley (driven sheave), and the belt itself. The drive pulley is connected to the power source, the driven pulley to the load, and the belt links them so rotation of the drive pulley turns the driven pulley and moves the load.

The other options mix parts from different systems: gears and shafts belong to a gear train, not a belt system; a motor and bearing are sources and supports rather than the belt’s two pulleys plus the belt; a chain and sprocket describes a chain drive, not a belt drive.