The ____ is the "brains" of the PLC.
A. power supply
B. CPU
C. I/O rack
D. program loader
Answer: B
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If low-voltage and high-voltage cables must be placed in parallel runs, they should be separated by at least 6" (150 mm) in order to protect the low-voltage conductors from _____.
a. noise b. corrosion c. heat d. vibration
Charlie’s Truck Repair and Service has a new contract that requires him to purchase and maintain new equipment for work on 18-wheeler trucks and heavy road equipment. Two separate vendors have made quotes and estimates for Charlie. Use the estimates and a 6% per year return requirement to find the better economic option. One problem is that Charlie does not currently know if the contract will last for 5, 8, or 10 years. He needs a recommendation for all three time periods.
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The engine speed increases when the driver depresses the accelerator pedal and releases the clutch pedal, but the vehicle does not move. Technician A says the clutch may be defective. Technician B says the dual-mass flywheel may be defective. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Type MC cable is a factory assembly of one or more insulated circuit conductors with or without optical fiber members enclosed in an armor of ____ metal tape, or a smooth or corrugated metallic sheath.
What will be an ideal response?