Describe the power supply of the PLC.
What will be an ideal response?
The function of the power supply is to lower the incoming AC voltage to the desired level, rectify it to DC, and then filter and regulate it. The internal logic of a PLC generally operates on 5 to 24 volts DC, depending on the type of controller. This voltage must be free of voltage spikes and other electrical noise and be regulated to within 5 percent of the required voltage value. Some manufacturers of PLCs build a separate power supply, and others build the power supply into the CPU.
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A circuit has a peak voltage of 275V. What is the average voltage value?
a. 120V b. 175V c. 190V d. 277V
List the five mechanisms by which toxic substances cause bodily injury.
What will be an ideal response?
To ensure good survival, the stalks of a kenaf plant must be cut at least:
a. 2 inches above ground c. 6 inches above ground b. 4 inches above ground d. 8 inches above ground
____ data is useful for determining how the vehicle was operating at the time and for locating any input or output values that are out of range.
A. Battery state of charge B. Freeze frame C. Scan tool D. HV ECU