Answer:
PLCs (Programmable logic controller) were original designed as replacement for relay control panels. Relay is another word for a switch. Relay control panels were made for the control of electronic instrumentents or devices. Later on PLCs were made to replace these timers and relay control panels. PLCs are more reliable, flexible and can work better in the harsh environmental situations then the relay control panels.
Answer:
false I think
Explanation:
you should only be able to have 1
Answer:
A) U.S. Department of Transportation
Explanation:
The federal Cabinet department " U. S. Department of Transportation " is concerned with transportation.
The U. S. Department of Transportation was formed by an act of Congress.
It was established on October 15, 1966 but began its operation on April 1, 1967.
The United States Secretary of Transportation governs this department.
Answer:
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