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
A Letter to a Young Poet addressed to Lehmann, her critique was addressed to a number of young poets of the day, including her nephew, Julian Bell, Stephen Spender, Cecil Day Lewis and W.H. Auden. Lehman felt her understanding of poetry was inadequate, and later parted company with the Woolfs. Her quoted examples have been criticised as not amongst the cited poet's best, a criticism she later accepted. A Letter to a Young Poet A Letter to a Young Poet was an epistolary letter by Virginia Woolf, written in 1932 to John Lehman, laying out her views on modern poetry. In 1932, Woolf responded to a