2-27. Why  is  liquid  discharged  through the outlet port when the piston is moved to the right? 1. The piston rod makes the inlet  chamber  smaller  than the  outlet  chamber 2. Check valve B opens, admitting  liquid  to  the  inlet port  and  outlet  port  through check valve A 3. Check  valve  A  opens,  causing the liquid confined in the inlet chamber to flow to the smaller  outlet  chamber  and out the outlet port 4. Check  valve  A  closes,  causing the liquid confined in the inlet chamber to flow to the outlet chamber and out the outlet  port REFER TO FIGURE 4-11 IN YOUR TEXTBOOK IN ANSWERING  QUESTIONS  2-28  THROUGH  2-30. 2-28. Which  of  the  following  components will  revolve  during  the  operation of this pump? 1. Cylinder  block 2. Slide block 3. Both 1 and 2 above 4. Pintle 2-29. The pumping action of this pump is obtained by which of the following  actions? 1. Rotating the pintle at the center of the cylinder block 2. Moving the cylinder block off center from the axis of the pintle 3. Positioning  the  sliding  block to provide unequal travel of the pistons in the cylinder block 4. Moving  the  rotor  and  reaction ring to provide unequal piston  travel  radially  around the cylinder block 2-30. In which of the following piston positions  will  the  cylinder  have taken on a full charge of liquid? 1. Position 1, view D 2. Position 2, view A 3. Position 3, view C 4. Position 4, view B 2-31. Pulsations of fluid flow from a radial-piston  pump  are  much greater if the pump has an even number of pistons than if it has an odd number. 1. True 2 . False 2-32. Which  of  the  following  components of a radial-piston pump is connected  to  the  cylinder  block? 1. Rotor 2. Pintle 3. Piston 4. Drive shaft REFER TO FIGURE 4-15 IN YOUR TEXTBOOK IN ANSWERING  QUESTIONS  2-33  AND  2-34, 2-33. The rocker arm will be perpendicular  to  the  shaft  when the shaft has been rotated how far? 1. One-quarter of a turn only 2. One-half of a turn 3. Three-quarters  of  a  turn  only 4. Either  one-quarter  or  three- quarters of a turn 2-34. Starting from the position of the shaft as indicated in figure 4-15,    view G,   how many times will rod A be pushed out and pulled in through the wheel during each shaft  revolution? 1. Once 2. Twice 3. Four times 4. Eight times 2-35. The  output  of  the  axial-piston pump is determined by which of the  following  factors? 1. Number of pistons 2. Length of the piston rods 3. Length of the drive shaft 4. Angle given to the tilting plane 2-36. What  component  of  a  Stratopower pump holds the pistons in constant contact with the mechanical  drive  mechanism? 1. Wobble  plate 2. Creep plate 3. Check spring 4. Piston return spring 12