Question 196Electricity & Electronics - 1st Asst/Chief

70% to pass

If a digital multimeter is set up as shown in figure "A" of the illustration, what would be displayed on the screen if the fuse being tested is blown? Illustration EL-0210

Diagram for USCG Electrical Chief: If a digital multimeter is set up as shown in figure "A" of the illustration,...
AOL volts
B0.001 ohms
C470 ohms
DOL ohms
AI Explanation

The correct answer is D) OL ohms. When a digital multimeter is set up to measure resistance (ohms) and the fuse being tested is blown, the multimeter will display "OL" (Overload) on the screen. This is because a blown fuse has an infinite resistance, which the multimeter cannot measure accurately. The other options are incorrect because they do not reflect the behavior of a digital multimeter when testing a blown fuse.

Related Questions
Q131:Which of the listed types of lighting fixtures does the diagram shown in figure ... Q225:How is a short in the shunt field of a DC motor best located? Q136:Refer to the simplified schematic of the Ward-Leonard drive system shown in the ... Q97:A three-phase alternator is operating at 450 volts with the switchboard ammeter ... Q154:Although saturable reactors are extremely useful in some applications, why is th...

Ready to test your knowledge?

Take a Electricity & Electronics - 1st Asst/Chief 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