Question 141Electricity/Electronics - QMED70% to pass
If a digital multimeter is set up as shown in figures "A" and "B" to test a silicon diode, what is the status of the diode if the screen displays OL V when configured as in figure "A" and displays OL V when configured as in figure "B"? Illustration EL-0212
AI Explanation
The correct answer is C) the diode is open.
When a digital multimeter is set up to test a silicon diode, as shown in figures "A" and "B", an open diode will display OL V (overload voltage) in both configurations. This indicates that the diode has a break or discontinuity in the circuit, preventing current from flowing through it in either direction.
The other options are incorrect because:
A) If the diode was operating properly, the multimeter would display a forward voltage drop when configured as in figure "A", and an open circuit (OL V) when configured as in figure "B".
B) An intermittently open diode would not consistently display OL V in both configurations.
D) A shorted diode would display a very low resistance, not an open circuit.
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