Maintenance Technician 2025 Complete Practice Test

A multimeter is an essential tool for measuring electrical parameters such as voltage, current, and resistance within circuits. It combines the functionalities of multiple instruments into one device, allowing for versatile use in troubleshooting and testing electrical systems. By using a multimeter, a technician can switch between measuring direct current (DC) and alternating current (AC), as well as determining the resistance of components, which is crucial for diagnosing electrical issues.

The other tools listed serve very specific purposes unrelated to electrical measurement. A socket wrench is designed for loosening or tightening fasteners, a screwdriver is used for driving screws, and a caliper measures physical dimensions with precision. While each has its importance in maintenance tasks, only a multimeter can provide accurate readings of electrical properties, which is vital for maintenance technicians working with electrical systems.