Question: 10. Why is a circle most often used to represent a coil in a motor control schematic? 11. When reading a schematic diagram, are the

10. Why is a circle most often used to represent a coil in a motor control schematic? 
11. When reading a schematic diagram, are the control components shown as they should be when the machine is turned off or de-energized, or are they shown as they should be when the machine is in operation? 
12. How are components that are mechanically connected together generally identified on a schematic diagram? 


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