Design of Electrical Machinery: a Manual for the Use, Primarily, of Students ...
Design of Electrical Machinery: a Manual for the Use, Primarily, of Students ...
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In our eReader you can find the full English version of the book. Read Design of Electrical Machinery: a Manual for the Use, Primarily, of Students ... Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Design of Electrical Machinery: a Manual for the Use, Primarily, of Students ...
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IQIO where Pt = hysteresis loss in watts in the teeth; -B< = average density in the teeth; y<= volume of the teeth. (22) Pa=Pc+Pt, where Pa = total hysteresis loss in the armature. Digitized by VjOOQIC ALTERNATORS, SYNCHRONOUS^ MOTORS, ETC. 67 From his experiments, Steinmetz also found that the energy consumed by eddy currents induced in a body of iron varies ^,s the square of the magnetic density, as the square of the frequency and in direct proportion to the Fig. 48. — ^Laminated Steel Spider Fig. 49. — ^Pole Piece Showing Dove- (Westinghouse). tail Projection (Westinghouse). volimie of the iron. This he expressed by the following empirical formula : (23) Pe = M(BmnV\ where P« =eddy current loss in ergs; TQ =eddy current constant, depending upon the thickness and the specific electrical conductance of the material. For the numerical value of this constant Steinmetz gives the following formula: (24) Y) =~ d2F10-9 = 1.645d2F10-9; b Digitized by GoogI( 58 DESIGN OF [electrical MACHINERY where d= thickness of iron laminae in cm.
What to read after Design of Electrical Machinery: a Manual for the Use, Primarily, of Students ...?
You can find similar books in the "Read Also" column, or choose other free books by Ryan, William Thomas, 1882- to read online
To quickly assess the difficulty of the text, read a short excerpt:
IQIO where Pt = hysteresis loss in watts in the teeth; -B< = average density in the teeth; y<= volume of the teeth. (22) Pa=Pc+Pt, where Pa = total hysteresis loss in the armature. Digitized by VjOOQIC ALTERNATORS, SYNCHRONOUS^ MOTORS, ETC. 67 From his experiments, Steinmetz also found that the energy consumed by eddy currents induced in a body of iron varies ^,s the square of the magnetic density, as the square of the frequency and in direct proportion to the Fig. 48. — ^Laminated Steel Spider Fig. 49. — ^Pole Piece Showing Dove- (Westinghouse). tail Projection (Westinghouse). volimie of the iron. This he expressed by the following empirical formula : (23) Pe = M(BmnV\ where P« =eddy current loss in ergs; TQ =eddy current constant, depending upon the thickness and the specific electrical conductance of the material. For the numerical value of this constant Steinmetz gives the following formula: (24) Y) =~ d2F10-9 = 1.645d2F10-9; b Digitized by GoogI( 58 DESIGN OF [electrical MACHINERY where d= thickness of iron laminae in cm.
What to read after Design of Electrical Machinery: a Manual for the Use, Primarily, of Students ...?
You can find similar books in the "Read Also" column, or choose other free books by Ryan, William Thomas, 1882- to read online
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