. 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. —Diagram of six \«>\q sir. inductors are required. And in tru-•gcd in whole coils as irmature wturns. The connections mustand countcr-cli-ekwi^ winding pr the armature. Ques. In what other way could the inductors bearranged in concentrated coils? CONSTRUCTION OF ALTERNATORS Ans. They could be grouped in three coils of 120 turns each,as
. 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. —Diagram of six \«>\q sir. inductors are required. And in tru-•gcd in whole coils as irmature wturns. The connections mustand countcr-cli-ekwi^ winding pr the armature. Ques. In what other way could the inductors bearranged in concentrated coils? CONSTRUCTION OF ALTERNATORS Ans. They could be grouped in three coils of 120 turns each,as shown in fig. When thus grouped the arrangement is called a hemitropic winding,as previously Fig. —Diagram of sis pole single phase alternator with concentrated half coil or hem:-tropic winding of same capacity as in fig. 1,527. There are an equal number of inductors,but in this case arranged in three instead of six coils. In this winding the direction ofwinding is alternately reversed so that the induced pressures do not oppose one another. Ques. What is the advantage, if any, of a half coilwinding? Ans. In single phase machines a half coil winding is equiva-lent, electrically, to a monotooth winding, and, therefore, is notof any particular advantage; but in three phase machines, it hasa decided advantage, as in such, a concentrated winding yieldsa higher pressure than a distributed winding. 5 ELECTRICITY rtum
Size: 1565px × 1597px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidhawkinselect, bookyear1914
