Which material is used in the diaphragm of an A.C mechanical pump?.(a) Paper(b) Metal sheet(c) High-grade cotton and rubber(d) CeramicI got this question in examination.I'm obligated to ask this question of Petrol Engine Fuel Supply System topic in division Petrol Engine Fuel Supply System of Automotive Engine Design

Which material is used in the diaphragm of an A.C mechanical pump?.(a)

1.	Which material is used in the diaphragm of an A.C mechanical pump?.(a) Paper(b) Metal sheet(c) High-grade cotton and rubber(d) CeramicI got this question in examination.I'm obligated to ask this question of Petrol Engine Fuel Supply System topic in division Petrol Engine Fuel Supply System of Automotive Engine Design
Answer» Correct choice is (C) High-grade cotton and rubber The explanation: The diaphragm used in the A.C MECHANICAL pump is made out of high-grade cotton IMPREGNATED with SYNTHETIC rubber. The downward movement of the diaphragm causes a vacuum in the chamber which causes the INLET valve to open.

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