Exercise 1.2.2.3: Look at the picture below and try to fill in the gaps without looking in the book.
The first letter of each word or short phrase is given.

Ex_1_2_2_3_image.JPGBy pushing the circled button shown in the picture the m - s l or s is connected. It can be disconnected by using the contact breaker in order to reduce the s reaching the c, especially when operating smaller f.