Describe the concept behind ladder diagrams?
What will be an ideal response?
The ladder rails represent the power while the rungs represent the circuits. components are placed by their function in the circuit, not their actual physical location.
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Which of the following is the most widely used material for wiring?
a. tin b. copper c. gold d. silver
On a lab scope, the waveform created by AC voltage is typically a:
A. sine wave B. rectangular wave C. saw tooth wave D. square wave
An HDET would NOT normally be required to do this:
a. track the operating expenses for a machine b. order replacement parts for a machine c. adjust operating systems to improve machine performance d. try to improve the designed performance parameters of a machine
Which one of the following statements for the SQC instruction is NOT true?
A) The SQL and SQC instructions are used as a pair, similar to the SQO and the SQI pair for the PLC 5 and ControlLogix PLCs. B) The control file found bit (FD) in the SQC is used to indicate that a true match between the source and file stack words was verified. C) The SQC instruction can be used as a diagnostic tool to determine if a machine has the correct switch/signal bit values in a register to start a production run. D) The SQC instruction is similar to SQI for PLC 5 and ControlLogix.