Circle diagram Circle diagram First conceived by A. Heyland in 1894 and B.A. Behrend in 1895, the circle diagram is the graphical representation of the performance of the electrical machine drawn in terms of the locus of the machine's input voltage and current. The circle diagram can be drawn for alternators, synchronous motors, transformers, induction motors. The Heyland diagram is an approximate representation of circle diagram applied to induction motors, which assumes that stator input voltage, rotor resistance and rotor reactance are constant and stator resistance and core loss are zero. Another common circle diagram form is as described in the two
Capital Circle clockwise direction. A short section under Federation Mall is in tunnel. The road does not form a complete circle, as a section under Commonwealth Avenue was closed a few years after opening due to the high number of crashes apparently resulting partly from the closeness of the entrance from Commonwealth Avenue and the exit to Kings Avenue. Vehicles are now forced to exit at Commonwealth Avenue. Capital Circle Capital Circle is a circular road surrounding Capital Hill in the centre of Canberra, Australia's capital city. It is one of three concentric roads on the hill, with State Circle the outermost