Which of the following is a material employed making diaphragm to measure pressure?(a) tourmaline(b) barium titanate(c) phosphor bronze(d) zirconate titanateI have been asked this question in a national level competition.Query is from Pressure Transducers in division Physiological Transducers of Biomedical Instrumentation

Which of the following is a material employed making diaphragm to meas

1.	Which of the following is a material employed making diaphragm to measure pressure?(a) tourmaline(b) barium titanate(c) phosphor bronze(d) zirconate titanateI have been asked this question in a national level competition.Query is from Pressure Transducers in division Physiological Transducers of Biomedical Instrumentation
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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