Question

an emergency stop pushbutton ______
is colored black to distinguish it from start switches
has a red mushroom head for easy location
has a recessed button to prevent accidental activation
resets automatically when released
play
reset
previous
next
go to overview

Explanation:

• For the first option: Emergency stop pushbuttons are typically red (not black) to signify urgency, so this is incorrect.
• For the second option: Emergency stop pushbuttons often have a red mushroom - shaped head. This design makes them easily locatable in case of an emergency, which is a standard feature for such devices.
• For the third option: Emergency stop pushbuttons are designed to be activated in an emergency, and a recessed button would make it hard to activate quickly, so this is incorrect.
• For the fourth option: Emergency stop pushbuttons usually need to be reset manually (e.g., by twisting or pulling) and do not reset automatically when released, so this is incorrect.

Answer:

B. Has a red mushroom head for easy location