# Questions & Answers of Operating Principle of Single Phase Induction Motors

The direction of rotation of a single-phase capacitor run induction motor is reversed by

The flux linkage $\left(\lambda \right)$ and current $\left(i\right)$ relation for an electromagnetic system is $\style{font-family:Arial}{\lambda=\left(\sqrt i\right)/\mathrm g}$. When i=2A and g (air-gap length) = 10 cm, the magnitude of mechanical force on the moving part, in N, is ________.

A 220V, 50Hz, single-phase induction motor has the following connection diagram and winding orientations shown. MM' is the axis of the main stator winding (M1M2) and AA' is that of the auxiliary winding (A1A2). Directions of the winding axes indicate direction of flux when currents in the windings are in the directions shown. Parameters of each winding are indicated. When switch S is closed, the motor