Heavy Duty Truck Systems – Chapter 13 (Hydraulics) – Lecture Summary & Practice Questions

Heavy Duty Truck Systems – Chapter 13 (Hydraulics) – Lecture Summary &
Practice Questions


Fluid - ANS ✔✔Any substance that has fluidity, that is, able to flow and yield to alter shape.



Pascal's Law - ANS ✔✔Pressure applied to a confined liquid is transmitted undiminished in all
directions and acts with equal force on all equal areas, at right angles to those areas.



Hydrostatic - ANS ✔✔Low fluid movement with high system pressures



Hydrodynamics - ANS ✔✔High fluid velocity with lower system pressures



Flow - ANS ✔✔the movement of hydraulic medium through a circuit



Work - ANS ✔✔occurs when effort or force produces an observable result.



Which of the following best describes the operating principles of a truck wet line kit? - ANS
✔✔Hydrostatic



Which of the following is a correct specification of atmospheric pressure at sea level - ANS
✔✔14.7 inches Hg



Convert a manometer reading of 12 inches Hg into pounds per square inch (psi) - ANS ✔✔6 psi



When 2 hydraulic cylinders in the same circuit are subjectd to equal flow, which of the following
should be true - ANS ✔✔The smaller cylinder will move faster