The symbol in a ladder logic diagram:
A)can be thought of as a normally open contact.
B)represents a capacitor.
C)is always at logic 0.
D)is always at logic 1.

Question

The symbol  in a ladder logic diagram:
A)can be thought of as a normally open contact. 
B)represents a capacitor. 
C)is always at logic 0. 
D)is always at logic 1.

Quizplus · Accepted Answer

The symbol given is a typical representation of a normally open contact in ladder logic diagrams. It is used to indicate an input that is turned on when the contact is closed and turned off when the contact is open.

The Symbol in a Ladder Logic Diagram