____________________ are required in automatic controls to transmit varying conditions in one circuit in order to influence the operation of other devices in the same or another electrical circuit.
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Q1: _ contacts remain activated (held mechanically) until
Q2: Magnetic switches used in controllers cannot be
Q3: An electrician must know the symbols and
Q4: Refer to the accompanying figure. What changes
Q5: In addition to starting, stopping and controlling
Q7: SCADA connections and RTUs and HMIs are
Q8: _ is a system that uses input
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