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timate
of flow the diameter of the nozzle above given could not be used, as it
was not accurately measured and the coefficient of efflux had not been
established. However, sufficient is known to justify the assumption
that the efficiency of the Pelton wheel is at least 86 per cent.
Tests at the University of California.—The
latest and most accurate data are derived from a monograttttby Ross E.
Browne, of the University of California; these, with the permission of
the author, are here given entire.
Hurdy-gurdy wheels are commonly called " Impact
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