Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 88
e used as anammeter by coupling across a resistance in the current circuit, if itcan be made to work at very low voltages. The instrument isvery satisfactory for testing arc lamps and motors of all kinds; 72 Hot-Wire Instruments when laid horizontally, it is dead beat and exceedingly sensitive,has… … Fig. 83 extension of the wire, which is never a great amount in a short length ;in the Holden type we measure the sag of an expanded wire. Fora very small linear expansion the sag is comparatively great, hencea short wire may be used. In the figure two wires are used of samesize and length side by…
Electrical engineering · Electric power
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