Question 370General Subjects - Assistant Engineer70% to pass
The output volume of a positive fixed displacement pump can be changed only by _______________.
AI Explanation
The correct answer is D) changing the speed of the pump.
The output volume of a positive fixed displacement pump can only be changed by varying the speed of the pump. This is because in a fixed displacement pump, the volume displaced per rotation is constant and cannot be changed. The only way to adjust the output volume is to change the rotational speed of the pump, which directly affects the volumetric flow rate.
The other answer choices are incorrect because they do not apply to a fixed displacement pump. Moving the slide block and rotor, changing the angle of the tilting plate, or moving the shaft trunnion block are methods used to adjust the displacement in variable displacement pumps, not fixed displacement pumps.
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