When a relay-logic Wired-AND gate is employed in a motor control circuit, the:
The relay-logic output is zero volts when any of the series switching or relay contacts are held ____________.
A) either open or closed
B) closed
C) none of the answers
D) open
Answer:D
Share your understanding of this question with the correct explanation.
Explanation:
When a relay-logic Wired-AND gate is employed in a motor control circuit, the relay-logic output is zero volts when any of the series switching or relay contacts are held open.
In a Wired-AND gate configuration, multiple relay contacts or switches are connected in series. For the AND gate’s output to have a voltage, all the series-connected relay contacts or switches must be in their closed state (making a connection). If any of the series contacts are held open (not making a connection), the continuity is broken, and the AND gate’s output will have zero volts.
Here’s a breakdown of the options and why option D is the correct answer:
A) Either open or closed: This option is incorrect. The AND gate output will only have a voltage when all the series contacts are closed (making a connection). If any one of them is open, the output will be zero volts.
B) Closed: This option is not correct because the AND gate output will only be zero volts when any of the series contacts are held open.
C) None of the answers: This option is not correct because there is a specific condition (held open) when the output is zero volts.
D) Open: This is the correct answer. When any of the series switching or relay contacts are held open (not making a connection), the AND gate’s output will be zero volts.