Red Seal Powerline Technician Practice Exam

Which tool is commonly used for testing the voltage in power lines?

1. Clamp meter

2. Multimeter

3. Volt meter

4. Thermometer

The correct answer is: Volt meter

The volt meter is specifically designed to measure the electrical potential difference, or voltage, between two points in an electrical circuit. In the context of power line testing, it provides a direct and accurate reading of the voltage present, making it essential for ensuring that lines are operating within safe and expected parameters. While a clamp meter can measure current without making direct electrical contact and a multimeter can both measure voltage and other electrical quantities, the volt meter's primary function is solely to measure voltage. This specialized role makes it particularly well-suited for testing power lines where voltage is the key concern. A thermometer, on the other hand, is entirely unrelated to electrical testing, as it measures temperature and not electrical properties. Hence, it does not apply in this context. Understanding the specific functionalities of these tools is crucial for powerline technicians to effectively perform their duties in ensuring electrical safety and integrity.