Question 420General Subjects - Assistant Engineer70% to pass
The total length of stroke in a reciprocating steam pump can be adjusted by _______________.
AI Explanation
The correct answer is A) changing the setting of the tappet collars on the pilot valve operating rod.
The total length of stroke in a reciprocating steam pump can be adjusted by changing the setting of the tappet collars on the pilot valve operating rod. This adjusts the travel of the pilot valve, which in turn controls the length of the main steam valve's opening and closing, and thus the total stroke length of the reciprocating pump.
The other options are incorrect because: B) variations in the throttle adjustment only control the amount of steam delivered to the pump, not the stroke length; C) twisting the stay rod does not directly affect the pump's stroke length; and D) changing the number of packing rings around the piston rod also does not directly control the stroke length.
Related Questions
#418 If a centrifugal pump were continually operated with the discharge valve closed the _______________.#419 Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by _______________.#421 Which of the listed reciprocating pump parts control the position of the pilot slide valve? #422 Which of the listed devices is used to control the admission of steam to the steam cylinder of a reciprocating pump? #423 Which of the following valve arrangements permits the reciprocating pump liquid piston to take suction from the suction chamber, and simultaneously discharge through the discharge chamber during the up and down strokes?