When a PB-switch-logic Wired-NAND gate is employed in a motor control circuit,
The PB-switch-logic output, taken on the common load side of the parallel-connected NC switch contacts, is zero volts only when all of the switching contacts are ______________.
A) either at-rest or activated
B) any of the answers
C) at-rest
D) activated
Show Answer
Answer:D
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