PLC 3 Review Practice Test.
PLC 3 Review Practice Test. a pictorial drawing shows what a device looks like, but does not give accurate dimension or other specific detail information - CORRECT ANSWER true when using a PLC to control a circuit, the PLC is part of the control circuit - CORRECT ANSWER true an automatically operated switch is a switch that is activated independent of a person or object - CORRECT ANSWER true direct hardwiring decreases the difficulty of troubleshooting or modifying a circuit - CORRECT ANSWER false the symbol for a normally open mechanical or automatic switch shows the operator moving upward when activated - CORRECT ANSWER true PLC programs are designed using computer assisted drafting software - CORRECT ANSWER false there is no way to distinguish which type of switch (pressure, temp., or limit) is being used by looking at a generic normally open or normally closed electrical symbol - CORRECT ANSWER true a normally open limit switch can be drawn on a printer as either normally open or normally open, held closed - CORRECT ANSWER true the difference between a mechanical switch and a sold state switch is that a sold state switch includes a circle around the switch symbol - CORRECT ANSWER false ladder diagrams used standard electrical sybols to indicate what types of input devices and output components are being used - CORRECT ANSWER true
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