Question 358Electricity & Electronics - Assistant Engineer

70% to pass

As shown in figure "A" of the illustrated PLC sub-circuit, what type of circuit is depicted? Illustration EL-0230

Diagram for USCG Electrical Assistant: As shown in figure "A" of the illustrated PLC sub-circuit, what type of circuit...
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
Q292:When electrical cables penetrate watertight bulkheads, what must be provided for... Q294:Which of the following materials is a good electrical insulator? Q40:A shaded-pole motor is a specific type of motor included in what class of motor?... Q468:What is the functional purpose of the resistor 'RL" placed in parallel to the ou... Q28:What type of DC motor is never connected to a belt driven load?

Ready to test your knowledge?

Take a Electricity & Electronics - Assistant Engineer Practice Exam
Official Resources
46 CFR Electrical Engineering 46 CFR Machinery & Electrical USCG National Maritime Center
← Previous All Questions Next →

Pass Your Coast Guard Licensing Exams!

Study offline, track your progress, and simulate real exams with the Coast Guard Exams app

Download on App Store Get it on Google Play Download for Mac