Which pulley drives the conveyor belt?

The head pulley is the correct answer because it is the component of the conveyor system that actively drives the conveyor belt forward. Located at the discharge end of the conveyor, it is typically connected to a motor that provides the necessary power to move the belt. The head pulley plays a crucial role in the overall function of the conveyor system by ensuring the materials being transported are delivered to the desired location efficiently.

In contrast, the tail pulley is situated at the opposite end of the conveyor system and mainly serves to support the belt and maintain tension. The take-up pulley is used primarily for tensioning the conveyor system, allowing for adjustments in belt length and tension as it operates. The idler pulley does not drive the belt; instead, it generally serves to support the belt at various points along the conveyor, helping to guide it and maintain its alignment without imparting any power.