QUESTION 1: (2 pts) The geometric error in the surface grinding process is mainly affected by the thermal effect and the stiffness of the grinding system. To minimize the geometric error, the selection of grinding parameters is important. The following parameters have been identified as those that have effect on the geometric error: wheel speed (V): rpm table speed (S): m/min - depth of cut (D): mm - grain size (M): mesh In addition, the quality engineer also identified the following factors that may affect the geometric error: - shop floor temperature - humidity - whether the work-piece material is homogeneous Prepare a P-diagram which illustrates this surface grinding operation in Taguchi's format