In a switch or relay logic ladder diagram:
The acronym __________ indicates the normally-open at-rest status of the control contacts.
The acronym __________ indicates the normally-closed at-rest status of the control contacts.
The acronym __________ indicates the normally-open held-closed at-rest status of the control contacts.
The acronym __________ indicates the normally-closed held-open at-rest status of the control contacts.
A) NC; NO; NO-HC; NC-HO
B) NO; NC; NO-HC; NC-HO
C) NO; NC; NC-HO; NO-HC
D) NC; NC-HO; NO; NO-HC
Show Answer
Answer:B
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