It must be possible to operate the punching device from three sides. A notch is to punched in the workpiece by a pneumatic cylinder. The workpiece may be fed from any one of three work stations. The punching operation is to be triggered when 2 sensors emit a signal. The signaling elements a, b and c are installed for sensing. The cylinder returns to its retracted position when the part is pulled out of the device. Positional Sketch: Electrical Circuit: SA K SE Cylinder >> sd 4 * Requirements: 1. Provide the truth table for the given condition 2. Draw pneumatic circuit and label the devices 3. Label the components in the given electrical circuit 4. Explain operation of the circuits K1 K1 K2 K2 K2 K3/ K3 K1/ Y K3