Question

question 3 of 16
a(n) ______ prevents a machine from operating without the proper guards in place.
○ deadman switch
○ hard stop
○ interlock
○ lockout

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Explanation:

To solve this, we analyze each option:

• Deadman switch: Requires continuous pressure to operate, not related to guards.
• Hard stop: An emergency stop, not about guards.
• Interlock: A device that prevents a machine from operating unless safety guards are in place (matches the description).
• Lockout: Isolates energy sources for maintenance, not about guards during operation.

Answer:

C. Interlock