Question 279General Subjects - QMED
70% to passExcessive lost motion in the valve mechanism of a duplex reciprocating pump will cause the _______________.
Apump to operate sluggishly
Bpump to short stroke continuously at both ends of the stroke for both cylinders
Ccushioning valves to wear
Dpistons to stop in mid-stroke
AI Explanation
The correct answer is A) the pump to operate sluggishly. Excessive lost motion in the valve mechanism of a duplex reciprocating pump will cause the pump to operate sluggishly. This is because the lost motion reduces the efficiency of the valve actuation, leading to decreased pump performance and reduced flow rate. The other answer choices are incorrect: B) is incorrect because excessive lost motion would not cause the pump to short stroke continuously. C) is incorrect because cushioning valves are not directly affected by lost motion in the main pump valves. D) is incorrect because excessive lost motion would not cause the pistons to stop in mid-stroke.
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