1.

Which of the following is a material employed making diaphragm to measure pressure?(a) tourmaline(b) barium titanate(c) phosphor bronze(d) zirconate titanate

Answer» Right choice is (c) phosphor bronze

Explanation: Phosphor bronze is used to make diaphragm to measure pressure. The motion of diaphragm is measured in terms of electric signals. Tourmaline , barium titanate and zirconate titanate are piezo electric materials.


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