Which technique uses markers to isolate fault location within the diagram?

• A. Bracketing
• B. Block Diagrams
• C. Information Funneling
• D. Convergent

Answer: (A)

Bracketing uses markers to isolate fault location by delimiting sections of the diagram and testing within those marked blocks. You place markers at boundaries around a portion of the circuit or control logic, verify whether the fault appears inside that marked region, and if not, move the markers to the next adjacent section. Repeating this narrows down the fault to the smallest bracketed area, making it quicker to pinpoint the exact location without checking every component. This is especially handy in motor control diagrams where many devices and interconnections can obscure the fault. Other techniques focus more on illustrating system structure (block diagrams) or on data collection and signal flow (information funneling, convergent approaches) rather than using markers to bracket off and isolate the faulty area.