What does DMM stand for, and what is its primary use?

DMM stands for Digital Multimeter, which is a versatile tool primarily used for measuring voltage, current, and resistance in electrical circuits. The significance of a Digital Multimeter lies in its ability to consolidate multiple measuring functions into one device, enabling technicians and engineers to perform various tests efficiently.

Digital Multimeters display measurements in a digital format, which makes it easier to read and understand the values being measured compared to older analog meters. The capability to measure voltage (both AC and DC), current, and resistance allows users to troubleshoot electrical systems, verify component functionality, and ensure proper circuit operations.

The other options present definitions or uses that do not accurately describe the function of a Digital Multimeter. For example, a "Dual Meter Multiplier" does not represent a recognized standard, while a "Dynamic Measurement Module" and "Direct Measurement Method" suggest specialized equipment or calibration techniques that are not inclusive of the primary functions performed by a Digital Multimeter.