Question 142Electricity & Electronics - QMED
70% to passIf a digital multimeter is set up as shown in figures "A" and "B" of the illustration, what is the status of the silicon diode if the display reads OL ohms when configured as in figure "A" and reads OL ohms when configured as in figure "B"? Illustration EL-0211
Athe diode is intermittently open
Bthe diode is shorted
Cthe diode is functioning properly
Dthe diode is open
AI Explanation
The correct answer is D) the diode is open. When a digital multimeter is set up to measure resistance (configured as in figures "A" and "B" of the illustration), an open diode will display "OL" (overload) in both configurations. This is because an open diode presents an infinite resistance, which the multimeter cannot measure accurately. The other answer choices are incorrect: A) is incorrect because an intermittently open diode would not consistently display "OL" in both configurations. B) is incorrect because a shorted diode would display a very low resistance, not "OL". C) is incorrect because an open diode is not functioning properly.
Related Questions
Q@q.QuestionNumber:In order to safely carry out repairs to a generator circuit breaker; it must be ... Q@q.QuestionNumber:What type of control circuit logic is featured in the electrical schematic diagr... Q@q.QuestionNumber:Which of the following statements concerning the specific gravity of a battery e... Q@q.QuestionNumber:Besides the fluorescent lamp itself and possibly a starter, which of the followi... Q@q.QuestionNumber:Which of the referenced waveshapes would appear at test point 5 (TP5
Ready to test your knowledge?
Take a Electricity & Electronics - QMED Practice ExamOfficial Resources
Want to practice with timed exams?
Download Coast Guard Exams for the full exam experience.
Get the App