The normal operating mode of the system is automatic; which option describes this?

• A. Remote
• B. Automatic
• C. Semi-automatic
• D. Manual

Answer: (B)

Automatic operation means the system runs its functions on its own, using internal control logic and sensor inputs to maintain the desired state without needing a person to manually operate controls. In normal use, this is exactly how the system should behave—it starts, regulates, and stops as needed automatically. Remote control implies control from another location, which isn’t the same as automatic action. Semi-automatic requires some operator input to proceed, and manual means full hands-on control. So automatic best describes the normal operating mode.