Titlebook: Electromechanical Prime Movers; Electric Motors Peter C. Bell Textbook 1972Latest edition Macmillan Publishers Limited 1972 electrical engi

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Macmillan Publishers Limited 1972

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Locale

Thrombotic Microangiopathy (TTP/HUS),The d.c. motor is inherently larger, more complex, and more costly than a conventional squirrel cage a.c. motor but for many areas of application it has distinct advantages which have ensured its continued use over the years. The advent of modern rectified power systems in the 1960s has enhanced its use quite considerably.

變形詞

Single-phase Motors,The performance of single-phase machines is usually inferior to that of three-phase machines, and their cost, for a given output and speed, is higher. For this reason single-phase motors are normally only used where a three-phase supply is not available and their application is mainly restricted to domestic, office and agricultural purposes.

MAOIS

Small/medium d. c. Motors,The d.c. motor is inherently larger, more complex, and more costly than a conventional squirrel cage a.c. motor but for many areas of application it has distinct advantages which have ensured its continued use over the years. The advent of modern rectified power systems in the 1960s has enhanced its use quite considerably.

預防注射

Abutment

brachial-plexus

Conflagration

Synchronous Motors,es as when operating as an alternator, it runs as a motor at synchronous speed, the speed being determined by the frequency of supply and the number of poles : .The name of this type of motor is derived from the fact that it has to run at the synchronous speed, which keeps it in step with the supply

Picks-Disease

A.C. Commutator Motors, of field and armature, both in magnitude and frequency. Due to the action of the commutator the voltage appearing between brushes placed on the commutator has the same frequency as the rotating field irrespective of the speed of the armature, but its magnitude depends on the relative speed and the