International Library of Technology · Scranton, International Textbook Co. · leaf 165
by the resistance of the armature.In the case of a series motor, the rush of current would not bequite as bad, as the field winding would help to choke the current back, but in either case itis necessary to insert a resistanceand gradually cut it out as themotor runs up to speed and gen-erates a… … MOTOR DESIGN. 2541 and connected to a switch, by means of which these sec-tions can be cut out as the motor comes up to speed.When the motor is running at full speed, this resistanceis completely cut out, so that no energy is lost in it.Fig. 1421 shows a simple form of motor-starting rheostat,the…
Electrical engineering
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