Fundamentals of Manufacturing Processes (Multiple Choice) 2018024
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As the speed of the reciprocating pump increases, which of the following statements is incorrect? A. Increased resistance to opening of the pump valves B. Reduced lift of the pump valves C. Increased likelihood of knocking in the pump valves D. Decreased volumetric efficiency Hint: An increase in speed increases the inertial force associated with the opening of the pump valves ； Furthermore, as the flow rate through the pump and valve increases, the pressure drop before and after the valve also increases, resulting in an increased lift.
B~~~~~~~~~~~~~