| Year | 1939 |
| Date | 27-Jul |
| Volume | 81 |
| Issue | 1,994 |
| Page | 101 |
| Category | Electrical |
| Part | |
| Title | Motors |
| Author | H.Chapman Pincher |
| Notes | Principles involved in direct and alternating current machines. Arrangement of lines of force between a north and south pole, resultant field of wire and magnet, the D.C.motor, radial magnetic field, stator and rotor of a D.C. motor, the A.C. motor, shunt-wound motor, series-wound, compound wound, induction motor, squirrel-cage rotor |