3) IN A PRODUCTION LINE SYSTEM, DOUBLE PILOT VALVES ARE INSTALLED TO
CONTROL TWO DOUBLE ACTING CYLINDERS NAMELY AS A1 AND A2. WHEN THE
PUSH BUTTON IS PRESSED, CYLINDER A1 WILL EXTENDED UNTIL IT REACHES WITH
ROLLER LIMIT SWITCH, R1. WITH THE CONTACT TO R1, CYLINDER A2 START TO
EXTEND. WHEN CYLINDER A2 REACHED ROLLER LIMIT SWITCH R3, CYLINDER A1
WILL BE RETRACTED (BACK TO INITIAL) AND TOUCHED THE ROLLER LIMIT SWITCH
R2. WHEN ROLLER LIMIT SWITCH IS CONTACTED, CYLINDER A2 WILL BE
RETRACTED BACK TO INITIAL POSITION. LIST ALL THE COMPONENTS INVOLVE IN
THE SYSTEM COMPLETELY AND DRAW THE PNEUMATIC SCHEMATIC DIAGRAMS
BASED ON THE DESCRIPTION ABOVE.
Notes
Comments
OD
mm
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Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

What precautions should you take to prevent injuries when dealing with heavy loads?

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.