Name two common types of belt drive and one advantage of each.

• A. V-belt (affordable and easy to adjust) and synchronous/timing belt (no slip, precise speed ratio).
• B. V-belt and chain drive.
• C. Synchronous belt and roller chain (loud operation).
• D. Timing belt (cheap) and leather belt (not used today).

Answer: (A)

The main idea is recognizing two common belt-drive types and the clear benefit each provides. A V-belt is a practical choice because it’s affordable and easy to adjust, making tensioning straightforward and cost-effective for many setups. A synchronous (timing) belt uses teeth that engage with the pulleys, so there is no slip and the system maintains a precise speed ratio, which is essential for accurate timing and synchronization. The other options mix in non-belt drives or refer to belts that aren’t commonly used today, so they don’t reflect the typical, widely used belt-drive pairing.