Question

A U-tube manometer of a reasonable size can have a height difference between the two arms of no more than 1.5 m. What is the maximum pressure difference that you can measure with this manometer.What limits the minimum pressure difference that you can measure with a water manometer, and what is the approximate value of the minimum measureable pressure difference?

Answer 1

The maximum pressure difference that can be measured with a U-tube manometer is 1.5 m. The minimum measureable pressure difference with a water manometer is approximately 10 kPa.

Step-by-step explanation:

A U-tube manometer, when used as an open-ended manometer, can measure the pressure difference by calculating the difference in the heights of the liquid levels in the two arms of the tube. In this case, the maximum pressure difference that can be measured is equal to the height difference between the two arms of the manometer, which is 1.5 m in this scenario.

For a closed-ended manometer, the pressure difference is determined by the difference in the heights of the liquid levels in the two arms of the tube. The minimum pressure difference that can be measured is restricted by the height of the manometer. If the manometer is filled with water, the minimum measureable pressure difference would be approximately 10,000 Pa or 10 kPa.