Which troubleshooting technique is generally divided into two groups called power and information?

• A. Signal Flow
• B. Block Diagrams
• C. Information Funneling
• D. Bracketing

Answer: (A)

Troubleshooting by signal flow centers on tracing how both energy and control signals move through a system. In a motor control setup, you have two parallel paths: the power path that delivers energy to the motor and the information path that carries the control signals and feedback telling devices what to do. By separating these two streams, you can quickly pinpoint whether the problem is in delivering power to components (a power-path fault) or in the control/information path (an input, sensor, or feedback fault). For example, if the motor doesn’t run but the control circuit is energizing the relay coil, the issue is in the power path; if the motor is wired correctly and powered but the control signal isn’t present or is incorrect, the fault lies in the information path. This focus on the two distinct flows is what makes signal flow the best fit for this troubleshooting approach, whereas other methods don’t inherently organize fault isolation around these two specific streams.