Which types of target information can be displayed by a PPI?

The correct answer, which highlights the capabilities of a Plan Position Indicator (PPI), includes range, bearing, and relative size. A PPI is a type of radar display that provides a two-dimensional view of objects in relation to the radar's location.

Range refers to the distance from the radar to the target, enabling operators to determine how far away an object is. Bearing indicates the angle or direction of the target from the radar’s perspective, which is critical for navigation and target tracking. Relative size allows technicians to gauge the target's physical dimensions based on the radar return, providing context about the target’s significance, especially in differentiating between types of objects (e.g., small boats vs. large ships).

While there are other types of information displayed by different systems, such as height or velocity, these do not pertain specifically to what a PPI provides in its standard functionality. The PPI is primarily designed for these three key aspects, making them essential for operational effectiveness in radar applications.