Question 3267 Deck General

The correct answer is B) Gearwheel. A pinion in a jacking system refers to the small gear that meshes with a larger gear or rack to transmit rotational motion and force. In a jacking system, the pinion gear is a critical component that allows the system to lift or lower heavy loads by converting the rotational motion of the jack mechanism into linear motion. The other answer choices are incorrect because they do not accurately describe the function of a pinion in a jacking system. A flexible shaft, joint, or coupling would not provide the necessary mechanical advantage and power transmission capabilities required for a jacking system.