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
Happiness Is a Four-letter Word Happiness Is a Four-letter Word Happiness is a Four-letter Word is a 2016 South African romantic drama film directed by Thabang Moleya and written by Busisiwe Ntintili. Based on the novel of the same name by Nozizwe Cynthia Jele, the film tells the story of three friends trying to find their happiness while maintaining images of success and acceptability. The film revolves around three women. Glamorous trophy housewife Zaza, played by Khanyi Mbau, seems to be living the new South African dream of money, success, and loving partners. Lawyer and compulsive perfectionist Nandi, played by Mmabatho Montsho, whose life from