. The street railway review . 0 60 80 100 120 140 160 180 700 220 240 260 280 Socondl car. there would then result speed time-curves as in Fig. _>, thespeed curve of the 45-ton car falling below and that of the 25-toncar rising above that of the 35-ton car for the same gear tractive effort of [20 lb. per ton gross has been taken with allthree equipments, as representing average conditions for this classof work, giving a net acceleration of about (1 111. p. h. persecond, after deducting friction loss and the power required toaccelerate the revolving parts. Any oilier rale of accel
. The street railway review . 0 60 80 100 120 140 160 180 700 220 240 260 280 Socondl car. there would then result speed time-curves as in Fig. _>, thespeed curve of the 45-ton car falling below and that of the 25-toncar rising above that of the 35-ton car for the same gear tractive effort of [20 lb. per ton gross has been taken with allthree equipments, as representing average conditions for this classof work, giving a net acceleration of about (1 111. p. h. persecond, after deducting friction loss and the power required toaccelerate the revolving parts. Any oilier rale of acceleration couldhave been taken with little or no effect upon the heating of themotive power or its energy consumption, as will be shown later,the larger part of the energy input being used up in overcomingair resistance at this high speed. Speed and amperes input are plotted as ordinates with time asabscissa and power may be shul off at any time, the car allowed tocoa 1 and brought lo rest by brake-, making the enclosed area ot. 0 i0 40 Ml 00 100 120 140 160 180 300 220 240 200 280 300 320 340 360 330 400 Sac„n<l. no. .i. lh in intensity but in their distribution. A!speed, the losses arc .ill in the coppei oi field and armature,divided according to their relative the armature loss distributed between ,lof amature and pole face and tips, depending upon the design oi the Tin- iron start ro .it standstill and ini ;i maximum al the moment i cutting out startingafter which il falls off somewhat,
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
