What does a normal set of measurements from a diode show?

A normal set of measurements from a diode shows low resistance in the forward direction and high resistance in the reverse direction. This behavior is characteristic of how diodes function; they are designed to allow current to flow easily in one direction (the forward direction) while blocking current flow in the opposite direction (the reverse direction).

When forward bias voltage is applied, the diode's junction becomes conductive, resulting in low resistance, allowing current to flow. Conversely, under reverse bias conditions, the junction becomes non-conductive, resulting in high resistance and preventing current flow. This fundamental operation is essential for diodes in various applications, such as rectification and signal clipping in electronic circuits.

The other options do not accurately reflect the behavior of a diode. For instance, low resistance in the reverse direction would suggest that current could flow backward, which contradicts the essential function of the diode. Similarly, having equal resistance in both directions or high resistance in both directions does not align with the diode's operational characteristics.