Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 240
ent saved by opening the shunt field momentarily during stops atlanding is not very much, and any gain of this nature is more than offset by the largerarmature current taken in starting under these conditions and the greater length of timewhich is required to bring the car up to full speed. When… … ELECTRIC ELEVATORS 2,895 Heavy Load Lifting Device—It is sometimes desired to have ahigh speed passenger elevator equipped so that it can be operated ata lower speed as a freight elevator for the purpose of lifting occasionalheavy loads such as safes, etc. This has usually been accomplished inthe…
Electrical engineering
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