Question 20General Subjects - QMED

The correct answer is B) the discharge capacity of the axial piston hydraulic pump is fixed by the pump housing angle. The discharge capacity of an axial piston hydraulic pump is determined by the angle of the pump housing, not by the length of the cylinder block. Increasing the cylinder block length (option C) would not affect the discharge capacity, as it is the angle of the swash plate within the pump housing that controls the stroke volume and thus the discharge capacity. Adding a shorter cylinder block (option A) or a longer cylinder block (option D) would not change the fundamental operating principle of the axial piston pump, which is defined by the fixed pump housing angle.