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A pneumatic actuator with good air seals consists of a circular diaphragm of 70mmdiameter, stem indicator and a control valve used to control the flow o water. On applying a force of 100Nonto the diaphragm, the control valve opens fully and the water flows through at the rate of 0.1m3/s. The stem indicator marking is not clear, but we know that the stem cannot displace beyond 50mm. Calculate: a) Size of the control valve used. b) Stem displacement if a

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force of 70Nis applied onto the diaphragm.