. 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. ing the belt as shown in fig. 1,381,or equivalent, must be provided. direct connection, in others the advantage to be gained by anincrease in speed more than compensates for the loss involvedin belt transmission. There are many places where belted machines may be usedadvantageously and economically. They are easily connectedto an existing source of power, a
. 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. ing the belt as shown in fig. 1,381,or equivalent, must be provided. direct connection, in others the advantage to be gained by anincrease in speed more than compensates for the loss involvedin belt transmission. There are many places where belted machines may be usedadvantageously and economically. They are easily connectedto an existing source of power, as, for instance, a line shaft usedfor driving other machinery, and for comparatively small instal-lations they are lower in first cost than direct connected 1,136 BAWKIXS ELECTRICITY machines. Moreover, when connected to line shaft they arerun by the main engine which as a rule is more efficient than a small engine direct oonnec*. Where there is sufficient room between pulley centers, a beltis a satisfactory medium for pow and one that is largely used. It is important I e liberal distance •en centers, especial case of generators or motors belted to a medium c - owing to the high speed of rotation of the electric machines, there is. Pig. —Sub-base an; - operated by )ever B. v sttt cogxaeraop. ransrng it to naorg the iuxk. After tightening bel:. •» considerable different pulley diameter; hence, if re close together, the arc of contact of the bel*. aller pulley would be appreciably reduced, thus diminishing the tractive p: - Ques. What provision should be made in the design ofan alternator to adapt it to belt dri\«.•? Ans. Provision should be made for tightening the belt. ALTERNATORS 1,137
Size: 2231px × 1120px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidhawkinselect, bookyear1914
