. Design of a direct current generator and switchboard for a farm power plant. s equal to 90 .9 x =413 watts. The heating should not be so great that more watts need be radiated per sq. in, of surface. The rad-iating surface on the armature is the face counted as a fullsurface and the ends counted as half surfaces. Therefore theradiating surface is TT x 10 x 5 = 157 sq. in. for the face.~ x 10 x 5 = n M for one end. ^ x 10 x 5 = M one side of air duct* 314 M M total radiating surface. Therefore the watts per sq. in. of radiating surface are413 = watts. Well within the
. Design of a direct current generator and switchboard for a farm power plant. s equal to 90 .9 x =413 watts. The heating should not be so great that more watts need be radiated per sq. in, of surface. The rad-iating surface on the armature is the face counted as a fullsurface and the ends counted as half surfaces. Therefore theradiating surface is TT x 10 x 5 = 157 sq. in. for the face.~ x 10 x 5 = n M for one end. ^ x 10 x 5 = M one side of air duct* 314 M M total radiating surface. Therefore the watts per sq. in. of radiating surface are413 = watts. Well within the limit. Pole Core:- The pole must have dimensions such that there is room for the windings between the poles. It was found that it was necessary to make the pole 5 in. long and to wind the conductors inches deep. An air space of in was left next to the core on each side. The diagram on the next page is drawn to 3/4 cale and shows that the above dimen sions can be used, by using a pole core 4,5 in. in diameter, i which makes the area of the pole ^ x = sq.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1912
