ph-lecnotes-hh1 (ay2013-v1.0)(1)

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 PAGE 1 Power Hydraulics Module PH-LecNotes-HH1 (AY2013-V1.0)  " “Hydraulics" is the study of the transmission and control of forces and movement by means of fluids. The word "Hydraulics" used in this subject is used to refer to "Power Hydraulics" which is the study of the characteristics and use of confined fluids under pressure especially in transmitting power, multiplying force and modifying motions.  Mineral oil is generally used as the transmission medium, although sometimes synthetic fluid, water, or oil-based emulsions are used especially in places where there are fire hazards. 1 A TYPICAL HYDRAULIC SYSTEM Figure1 shows a typical hydraulic system: Figure 1  LOAD  Directional Control Valvel Flow Control Valves  Relief Valve Primer  Mover Pump Cylinder CHAPTER H1 I NTRODUCTION  T O  P OWER  H YDRAULICS  

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