1. Design a Hydraulic circuit for the excavator earth moving equipment as shown in Figure 1. Dipper Arm Восп Synder DEERE Cylinder Bucket Track Conprovent 2000 Upper Front Right Side Rear Figure 1. Major Components 2. Draw the positional sketch for excavator and also label all the symbols in the hydraulic circuit properly and clearly. 3. Critically explain the working of the excavator with respect to the hydraulic circuit drawn. 4. Draw the symbols for the following Rubrics a. Normally open contact, closes in delayed mode b. control switch with normally open contact c. limit switch d. shut-off valve, electromechanically actuated e. relay with three normally open contacts and open normally closed contact