Red Seal Plumbing Practice Exam 2026 - Free Red Seal Plumbing Practice Questions and Study Guide

Question: 1 / 400

When using a U-tube meniscus, how is the pressure measured?

By reading the level on one side

Calculating the distance between the levels

Calculating the difference between the levels on either side

When using a U-tube meniscus, the pressure is measured by calculating the difference between the levels on either side. Option A and D are incorrect because they do not take into account the difference between the levels on both sides. Option B is incorrect because it simply calculates the distance between the levels, which may not accurately reflect the pressure difference. The most effective and accurate way to measure pressure with a U-tube meniscus is to calculate the difference between the levels on both sides.

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Measuring the circumference of the U-tube

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