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
Love Is Just a Four-Letter Word Love Is Just a Four-Letter Word "Love is Just a Four-Letter Word" is a song written by Bob Dylan, and long associated with Joan Baez, who has recorded it numerous times, and performed it throughout her career. Baez immediately took to the song, which was written by Dylan sometime around 1965, and began performing it, even before it was finished. In the film "Dont Look Back", a documentary of Dylan's 1965 tour of the UK, Baez is shown in one scene singing a fragment of the then apparently still unfinished song in a hotel room late at night. She then