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
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