Question

_________ measures air pressure in air permeability test.

(a) Barometer

(b) Manometer

(c) Bell jar

(d) Tube

The question was asked during an interview for a job.

My query is from Sand Control Tests topic in portion Pattern Materials & Moulding Sand Tests of Foundry and Forging

Answer 1

The correct answer is (b) Manometer

For explanation: The quantity of air that will pass through a standard specimen of the sand at a particular pressure condition is called the permeability of the sand. This is a major sand control test. Hence, a manometer is used.