Which technician's statement regarding diode testing is correct?

The correct answer reflects that Technician A provided an accurate statement regarding diode testing. When testing a diode, it is essential to check its forward bias and reverse bias characteristics. A diode allows current to flow in one direction (the forward direction) and blocks it in the opposite direction (reverse direction).

In the forward bias test, a properly functioning diode will show a low voltage drop (typically around 0.6 to 0.7 volts for silicon diodes) indicating that it is conducting. In contrast, a reverse bias test should show no current flow, typically registering an open circuit condition, meaning that the diode is not allowing any current to pass through.

If Technician A correctly explains this fundamental principle of diode testing, including the expected voltage readings in both forward and reverse bias conditions, then their statement is indeed correct.

Technician B may have provided incorrect information, such as failing to recognize the expected behavior of a diode in either bias, leading to statements that might be misleading concerning how to accurately assess a diode’s functionality. Understanding the basics of forward and reverse bias conditions is crucial for proper diode testing, and thus the selection of Technician A's statement is validated by the principles of how diodes operate in circuits.