Excerpt from Hawkins Electrical Guide: Number 6; Questions, Answers and 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 Parts; construction - field windings for induction mo tors - calculation for revolutions of rotating field; objection to high speed of field - diificulty with low frequency currents general character of field winding - formation of poles grouping of coils - starting of induction motors: external resistance, auto-transformer, internal resistance methods internal resistance induction motors; adaptation - how resistance is cut out - why not desirable for large sizes external resistance or slip ring motors - operation armature connections - single phase induction motors service suitable for - disadvantage - parts - why not self starting - how started - phase splitting; production of rotating field from oscillating field - methods - starting coils - shading coils - character of the starting torque modification of armature for starting with heavy load clutch type of single phase induction motor; its action in starting commutator motors classification action of closed coil rotating in alternating field - the transformer pressure generated pressure self-induction pressure local armature currents; reason for sparking; how reduced - high resistance connectors - effect of low power factor efiect of frequency - series motor - features - adaptation neutralized series motor - conductive method - inductive method - shunt motors - repulsion motors difficulty with early motors - means employed to stop sparking essentials of single repulsion motors - the term repul sion induction motor - oompensated repulsion motor power factor of induction motors - its importance false ideas in regard to power factor - speed and torque of motors. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.