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action adjustment alternating amperes angle applied armature current becomes brushes calculated capacity cause cent circuit cloth coil commutation connected considered constant construction corresponding curves depends determined developed diagram difference direction directly driving drop Edition effect efficiency electric employed Engineering equal equation example excitation existing fact field flux frequency given gives greater hence Illustrated increase indicated induction motor input latter less line voltage losses machine magnetic maximum means method obtained occur ohms operation output phase poles position power factor practically primary produce range rated load ratio reduced regulation relation represents resistance respectively rheostat rise rotation rotor running secondary series motor shown shows shunt motor single-phase speed starting stator supply synchronous synchronous motor temperature torque transformer turns usually variation varies various voltage volts watts winding
Сторінка 293 - Handbook for the Use of Electricians in the operation and care of Electrical Machinery and Apparatus of the United States Seacoast Defenses. Prepared under the direction of Lieut. -General Commanding the Army.