We claim the ornamental design for a yoke of stator core for electric motor, as shown and described.
FIG. 1 is a front perspective view of a yoke of stator core for electric motor of the present invention;
FIG. 2 is a first side view thereof;
FIG. 3 is a second side view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a front perspective view thereof shown in an environmental use.
The broken line showing of yoke of stator core for electric motor is included for the purpose of illustrating environment and forms no part of the claimed design.