Week 4 Checkpoint – Introduction to Automation

In a standard electrical ladder diagram, what do the two vertical rails represent?

You are troubleshooting a circuit and see a symbol for a “Normally Closed” (NC) contact. What should be the state of this contact when it is inactive (not pressed/triggered)?

When using the “Trace Method” to isolate a fault, where should a technician always begin their physical search on the diagram?

In a Process Flowchart, which symbol is used to represent a “Decision” or a conditional test (e.g., “Is the part in place?”)?

Why is a “Normally Closed” (NC) contact typically used for Emergency Stop (E-Stop) buttons?

Which phase of the PLC “Control Loop” involves the controller updating physical components like solenoids, motor starters, and indicator lights?

Which type of programming logic is defined as a step-by-step process where Step B cannot occur until Step A is fully complete?

A technician is asked to add a new sensor to a machine that wasn’t in the original plan. If this addition starts to use up unplanned time and budget, what is this phenomenon called?

You have identified a faulty sensor and developed a plan to replace it. According to the PDCA cycle, what should you do immediately after implementing the solution?

In an industrial control system, what is the primary purpose of an “Interlock”?