Which device is commonly used to measure electrical parameters in equipment?

• A. Multimeter
• B. Hydrometer
• C. Thermometer
• D. Manometer

Answer: (A)

To measure electrical parameters in equipment, you need a tool that can read voltage, current, and resistance and check circuit continuity. A multimeter is designed for exactly this purpose. With it, you can verify that motors or control panels are receiving the correct voltage, test motor windings for opens or shorts by measuring resistance, and confirm wiring or switch connections by checking continuity. Digital models give precise readings and may include functions for AC and DC voltage, current, resistance, and even continuity beeps.

Other devices are used for non-electrical properties: a hydrometer measures liquid density or specific gravity, a thermometer measures temperature, and a manometer measures pressure. They don’t test electrical parameters, which is why the multimeter is the go-to instrument for this task.