In a wave winding, if \( y_b \) and \( y_c \) are back and commutator pitches respectively, then the front pitch \( y_f \) is given by
Show Hint
Remember that for a wave winding, the commutator pitch is always the average of the back and front pitches:
$$y_c = \frac{y_b + y_f}{2}$$
Simply rearrange this fundamental average formula to solve for whichever pitch ($y_b$ or $y_f$) the question asks for!