As a general rule, all input devices, except STOP buttons, are wired ____________________.
Fill in the blank(s) with the appropriate word(s).
N.O.
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The ____________________ wiring diagram uses symbols and a simple plan of connections to illustrate the scheme of control and the sequence of operations.
Fill in the blank(s) with the appropriate word(s).
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____ is a metamorphic rock generally made up of silica with smaller amounts of iron oxide and magnesium oxide.
A. Slate B. Flagstone C. Schist D. Shale
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The potential relay is easy to troubleshoot because only two parts of the relay must be checked.
Answer the following statement true (T) or false (F)
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Rotary switches are sometimes known as ____ switches.
A. selector B. circular C. proximity D. make before break
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