Circle diagram constant air-gap induction motor images shown here, where, The circle diagram is drawn using the data obtained from no load and either short circuit or, in case of machines, blocked rotor tests by fitting a half-circle in points O and A. Beyond the error inherent in the constant air-gap assumption, the circle diagram introduces errors due to rotor reactance and rotor resistance variations caused by magnetic saturation and rotor frequency over the range from no-load to operating speed. Steinmetz equivalent circuit Circle diagram First conceived by A. Heyland in 1894 and B.A. Behrend in 1895, the circle diagram is the
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