3-) The ladder diagram given in the figure below,

a) Write the command language equivalent. (5P)

b) Comment with the most appropriate expression what is wanted to be done. (5P)

c) Explain what would happen if T33 was instead of T37 and T34 instead of T38. (5P)

d) How would the system operation change if T37 had a T37 closed contact instead of T37 open contact in Network 3?

Please explain. (5P)

10.0 IO.1 0.0 200 T37 IN TOF 450 -PT T37 Q0.1 0.0 T38 TOF IN T38 1200-PT 30.2 10.0 IO.1 0.0 200 T37 IN TOF 450 -PT T37 Q0.1 0.0 T38 TOF IN T38 1200-PT 30.2