A PB stack switch, which may contain several sets of switching contacts that can all be either NO or NC, or a combination to where some are NO and others are NC, is normally used in pushbutton ___

Electrical Engineering MCQ
1

A PB stack switch, which may contain several sets of switching contacts that can all be either NO or NC, or a combination to where some are NO and others are NC, is normally used in pushbutton _______________.

A) none of the answers
B) either interlock or lock
C) interlock
D) lock

Show Answer

Answer:C

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