Question 358Electricity & Electronics - Assistant Engineer
70% to passAs shown in figure "A" of the illustrated PLC sub-circuit, what type of circuit is depicted? Illustration EL-0230
AAC input unit
BAC output unit
CDC input unit
DDC output unit
AI Explanation
The correct answer is C) DC input unit. The illustration EL-0230 shows a PLC (Programmable Logic Controller) sub-circuit, and the depiction in figure "A" represents a DC input unit. This is because the circuit has direct current (DC) terminals, which are used to connect sensors, switches, or other DC-powered devices to the PLC for data input and processing. The other options are incorrect because AC input units utilize alternating current (AC) terminals, while AC output units and DC output units are used to control AC-powered or DC-powered devices, respectively, rather than for data input.
Related Questions
Q@q.QuestionNumber:In referring to the illustration of the Ward-Leonard drive system, what type of ... Q@q.QuestionNumber:Periodic testing using a special camera may be performed to detect potentially d... Q@q.QuestionNumber:From the instant of start-up, through the acceleration period, and until the mot... Q@q.QuestionNumber:With regard to the maintenance of electrical generating machines with insulated ... Q@q.QuestionNumber:Which of the following illustrated manual motor starters represents the wiring d...
Ready to test your knowledge?
Take a Electricity & Electronics - Assistant Engineer Practice ExamOfficial Resources
Want to practice with timed exams?
Download Coast Guard Exams for the full exam experience.
Get the App