Cathodic Protection Tester Practice Exam

Which type of meter is characterized by electronic circuitry and a digital display?

1. Analog meter

2. Digital meter

3. Galvanometer

4. Voltmeter

The correct answer is: Digital meter

A digital meter is characterized primarily by its use of electronic circuitry that processes signals and presents measurements in a numerical format on a digital display. This design allows for more precise readings and easier interpretation compared to traditional measuring devices. Unlike analog meters, which use a needle and a dial to show values, or galvanometers, which typically measure small currents and are also needle-based, digital meters provide clear, easy-to-read digits that reduce the likelihood of misreading due to parallax errors. Additionally, voltmeters, while they can be digital in design, may also be analog. However, the defining feature of a digital meter is the digital display, confirming that it is the most appropriate answer.