Which robot type is most associated with multiple rotary joints used for versatile movement?

• A. polar
• B. SCARA
• C. cartesian
• D. articulated

Answer: (D)

The main idea is that articulated robots use multiple rotary joints like an arm, giving a high number of degrees of freedom and the ability to bend, twist, and reach around obstacles in three-dimensional space. This setup lets the end effector follow complex paths and adapt to varied tasks, which is exactly what “versatile movement” implies.

That versatility comes from the many rotating joints that provide multi-axis motion, enabling accurate positioning and orientation in 3D. Other robot types are typically more limited: Cartesian robots move only along straight linear axes with no rotations, SCARA robots operate mainly in a single plane with a couple of rotary joints for planar movement, and polar robots use a combination of rotation and a single translational axis but don’t offer the same multi-axis reach and maneuverability as an arm with many rotary joints.