An engineer is installing an open-end mercury manometer attached to a pipe that

Question

An engineer is installing an open-end mercury manometer attached to a pipe that will eventually carry pressurized gas. While the pipe is open to the atmosphere, she adds enough mercury into the manometer that the mercury level in both arms of the manometer is 720.0 mm above the bottom of the manometer. If the end of the open arm of the manometer is 1005.0 mm above the bottom of the manometer, what is the maximum pressure (gauge) of the pressurized gas that the pipe can carry before the mercury spills out the open end the manometer?

Explanation / Answer

Solution :-

The difference between the mercury level inthe open arm and bottom level is the pressure that the pipe can handle.

The pressure gauze that the gas pipe can pass is = 1115.0 mm - 650.0 mm = 465 mm

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