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 (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 143
° ° 2 ■•-* C tn O f— O ^ W «-.X I- r3 ^>.|l^-2§|ES§|i-l^-^g^^u5^3->-E-S43 S gj=i!-? 2 3 5 Mj; C 3.C2 3« nj (u M i^--^j^^ «-C^ oj u rt f^ 562 HAWKINS ELECTRICITY Oues. What is the action of the motor in the Thomp-son watt hour meter? Ans. It rotates at very slow speed, and since there is… … Fig. 656.—Interior of Thompson watt hojir meter (type C-6) showing armature, small commu-tator and gravity brushes. A spherical armature moving within circular field coils isthe construction adopted in this meter. The armature is wound on a very thin papershell, stiff enough to withstand the strain…
Electrical engineering
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