Maintenance Technician Practice Test 2026 - Free Maintenance Technician Practice Questions and Prep Guide

A multimeter is an essential tool in maintenance for measuring voltage, current, and resistance in electrical circuits. It serves multiple functions that are crucial for diagnosing and troubleshooting electrical issues.

Measuring voltage allows a technician to determine if a circuit is receiving the correct amount of electrical potential, which can help identify problems with power supply. Measuring current is important for checking if devices are drawing the expected amount of electricity; excessive current can indicate a fault or overload. Resistance measurement is useful for testing components such as resistors or checking for short circuits and open circuits in wiring.

Together, these measurements provide a comprehensive overview of the electrical system's functionality, helping technicians effectively diagnose and solve issues related to electrical performance. The multimeter's versatility makes it a vital tool in the maintenance and repair of electrical systems.