Question 405General Subjects - Assistant Engineer70% to pass
Excessive lost motion in the valve mechanism of a duplex reciprocating pump will cause the _______________.
AI Explanation
The correct answer is B) 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 in the valve mechanism reduces the efficiency of the pump's operation, as the valves may not open and close at the optimal times during the pump's stroke. This results in the pump not being able to draw in and discharge the fluid as effectively, causing the overall pump operation to become sluggish.
The other options are incorrect because: A) cushioning valves wear is not a direct consequence of lost motion in the valve mechanism; C) the pump will not short stroke continuously at both ends of the stroke for both cylinders; and D) the pistons will not stop in mid-stroke due to lost motion in the valve mechanism.
Related Questions
#403 Which of the listed types of steam end piston rod packing should be used in a steam reciprocating pump? #404 A spur gear pump should be operated with the discharge valves _______________.#406 When the danger of freezing exists, all steam driven reciprocating pumps and deck equipment should be _______________.#407 An inadequate reciprocating bilge pump discharge is most often caused by _______________.#408 Which of the following conditions would prevent a steam reciprocating pump from delivering its rated capacity?