. Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise. FlGS. 1,575 and 1,576.—Westinghouse turbine alternator armature construction. Fig. 1, showing dovetail grooves in armature casting; fig. 1,576, laminae assembled indovetail grooves of armature casting. The following table will show the relation between the revolu-tions and frequencies for the numbers of pol^s just designated. TABLE OF FREQUENCY AND
. Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise. FlGS. 1,575 and 1,576.—Westinghouse turbine alternator armature construction. Fig. 1, showing dovetail grooves in armature casting; fig. 1,576, laminae assembled indovetail grooves of armature casting. The following table will show the relation between the revolu-tions and frequencies for the numbers of pol^s just designated. TABLE OF FREQUENCY AND REVOLUTIONS Frequency Revolutions 2 pole 4 pole 6 pole 25 60 100 1,5003,6006,000 7501,8003,000 5001,2002,000 . _ I HAWKINS ELECTRICITY. Pig. ittire of Westinghoobine alternator withend bells rerrshowing method olbracing the coil ends. .■ — r - i _ v - • • - • --—. •_ _—.; :r_-e • ■ --.;.— ,: -_ - _■ - --•; -~ i • :.-. i.— ■■--; -•- :•-•- ■ .ltv Had :.i— -_>-- ----- :.— .■? -■: - . ■- r • i >\- r i -■■-_■-:-■: —. • •-_.;- ;■ - - - - - -; • _~ •. _- --_-_ • -■-- -- .; -. ---=,- rea - - .-- ■_• ---■•-, .<= - - ----- ..=, : --::..v : - - :•■-•• -■- • - ;.- - — •~ - •--■■■■----■ .; ~r. e ..- .-- • -_- - :,; v- - -^ ■-=•- -•■■■ ■■■-■ ■<■=.■•.■. i ■-i L- - -^ • • - r -_; - .... ;-*-- : - • - — ;_ ... ;•-__. : ■paling blocks btlmmtiu the hey areaol irpciVd -. the coQs. Mallear. are used to ■i<im.»i».| tie
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