. The Street railway journal . FIG. 1.—TYPICAL RUN CURVE WITH DIRECT-CURRENTMOTORS Weight of car, 35 , two No. 50-C Ry. speed, 30 m. p. volts at motors, 550Braking accel., 2 m. p. h. p. kw., VMean2 curent per motor, 105 amp. Accel., m. p. h. p. s. dear ratio, 21:50. Wheels, 36 in. Run, 2 miles. Stop, 30 seconds. FIG. 2.—TYPICAL RUN CURVE WITH ALTERNATING-CURRENT MOTORS Weight of car, tons. Equipment, two 175-hp ac. motors. Gear ratio, 17:53. Schedule speed, 30 m. p. h. Stop, 30 seconds. Braking accel., 2 m. p. h. p. s. Average kw
. The Street railway journal . FIG. 1.—TYPICAL RUN CURVE WITH DIRECT-CURRENTMOTORS Weight of car, 35 , two No. 50-C Ry. speed, 30 m. p. volts at motors, 550Braking accel., 2 m. p. h. p. kw., VMean2 curent per motor, 105 amp. Accel., m. p. h. p. s. dear ratio, 21:50. Wheels, 36 in. Run, 2 miles. Stop, 30 seconds. FIG. 2.—TYPICAL RUN CURVE WITH ALTERNATING-CURRENT MOTORS Weight of car, tons. Equipment, two 175-hp ac. motors. Gear ratio, 17:53. Schedule speed, 30 m. p. h. Stop, 30 seconds. Braking accel., 2 m. p. h. p. s. Average kw, real; , m. p. h. p. , 36 , 2 miles. Average volts at motor, 200. rheostatic loss occurs. With the alternating-current system,on the other hand, the voltage at the car may be controlled bysuitable means and the rheostatic loss thus avoided. Whenstops are few, and, consequently, runs are long, the rheostaticloss in the direct-current system is a small proportion of thetotal, and,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
