As shown in the illustration, the voltmeter...

Question 1 / 270705eccef9cbacbc34ba4d45b46

Question 1 of 270705eccef9cbacbc34ba4d45b46

As shown in the illustration, the voltmeter measures what voltage? See illustration EL-0090.

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Question 1 of 27070

As shown in the illustration, the voltmeter measures what voltage? See illustration EL-0090.

If the question has a related picture, it will appear here.

🔍 Key Concepts

• How the reference anode selector switch is wired in the diagram • What the two leads of the voltmeter (V) are actually connected to • The difference between protective anodes and reference anodes in an impressed-current cathodic protection system

💭 Think About

• Trace the wiring from the voltmeter symbol back to the hull and to the anode selector: what physical points in the system do its two terminals touch? • Look at whether the voltmeter is tied into the protective anode circuit, the reference anode circuit, or the regulator output, and whether it connects to one anode at a time or more than one at once. • Ask yourself: does any part of this diagram show the voltmeter summing or averaging signals, or is it simply reading between two specific points?

✅ Before You Answer

• Verify which symbol in the illustration represents hull ground and see if one side of the voltmeter is connected there. • Check if the selector switch ahead of the voltmeter connects to a single reference anode at a time or to multiple anodes simultaneously. • Confirm that the voltmeter is not connected in series with the protective anode current path (that would be an ammeter role), but rather in parallel between two points.

Question 1 of 27070

As shown in the illustration, the voltmeter measures what voltage? See illustration EL-0090.

It measures the voltage of the electronic regulator output with reference to hull ground.

It measures the average voltage of all the protective anodes with respect to hull ground.

It measures the average voltage of both reference anodes with respect to hull ground.

It measure the voltage of the selected reference anode with respect to hull ground.

Question 1 / 270705eccef9cbacbc34ba4d45b46

Question 1 of 270705eccef9cbacbc34ba4d45b46

As shown in the illustration, the voltmeter measures what voltage? See illustration EL-0090.

Back

Question 1 of 27070

As shown in the illustration, the voltmeter measures what voltage? See illustration EL-0090.

If the question has a related picture, it will appear here.