Electrician Red Seal · Question
A SCADA system provides a graphical interface for an operator to monitor and control a municipal water treatment plant. Which of the following is NOT a typical function performed by the HMI component of a SCADA system?
The HMI (Human Machine Interface) is primarily for interaction, display, and data logging. Complex control algorithms (like PID loops or sequencing) are typical
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Question: A SCADA system provides a graphical interface for an operator to monitor and control a municipal water treatment plant. Which of the following is NOT a typical function performed by the HMI component of a SCADA system?
Answer options:
- Displaying real-time process data and alarm statuses.
- Allowing operators to start/stop pumps or adjust setpoints. ✅ Executing complex control algorithms directly on field devices.
- Logging historical data for trend analysis and reporting.
Correct answer: Executing complex control algorithms directly on field devices.
Explanation: The HMI (Human Machine Interface) is primarily for interaction, display, and data logging. Complex control algorithms (like PID loops or sequencing) are typically executed by the PLC or RTU at the field level, not directly by the HMI.
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- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
- During a renovation of a commercial kitchen, an electrician needs to replace an old single-phase, 240 V, 5 kW
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