Texas Commission on Environmental Quality (TCEQ). Class C Water License Exam

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Prepare for the Texas Commission on Environmental Quality (TCEQ) Class C Water License Exam. Utilize flashcards, multiple choice questions, and in-depth explanations. Equip yourself with the skills to succeed!

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Which of the following is NOT a common type of water meter?

Magnetic flow meter
Inverted Parshall flume
Positive displacement meter
Ultrasonic meter

The correct answer is: Inverted Parshall flume

The inverted Parshall flume is primarily a flow measurement device rather than a standard water meter. It is used to measure the flow of water in open channels, relying on the principle of creating a specific hydraulic relationship based on the water level. While it plays an important role in water measurement, it does not function as a meter designed for measuring the volume of water passing through a closed pipeline, as the other options do. In contrast, magnetic flow meters, positive displacement meters, and ultrasonic meters are all types of flow meters specifically designed for measuring water flow in pipes. Magnetic flow meters use electromagnetic principles to measure flow rates in conductive liquids. Positive displacement meters work by capturing a fixed volume of liquid in a chamber and measuring how many times the chamber fills and empties. Ultrasonic meters utilize sound waves to gauge the flow velocity of the liquid. These devices are widely utilized in various water distribution and management systems, making them common types of water meters.