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 0.70 V when configured as in figure "A" and displays OL V when configured as in figure "B"? Illustration EL-0212

Correct Answer: Option D — diode is operating properly

A silicon diode typically exhibits a forward voltage drop of approximately 0.6V to 0.7V. Displaying 0.70V in forward bias and 'OL' (open loop) in reverse bias confirms the diode is functioning correctly as a unidirectional current valve, consistent with standard semiconductor testing procedures for marine electronic equipment.