Audels answers on automobiles, for owners, operators, repairmen ... including chapters on the storage battery, electric vehicles, motor cycles, overhauling the car, etc. Fully illustrated and indexed (1911)
Booth, Charles Edwin, b. 1849 · London, New York, T. Audel & co · leaf 412
amperes746 ELECTRICITY 385 Ques. What is the general construction of volt meters and amme-ters? Ans. Electrical gauges for measuring volts and amperesare constructed on the principle of the DArsonval galvano-meter, with either a permanent or a variable field. Thegeneral features are a small… … Fig. 291.—Index scales of a volt meter and ammeter for measuring thepressure and intensity of the current in a direct current electrical circuit. as to indicate on a graduated scale the variation in electricalconditions. A coiled steel spring attached at the base ofthe needle acts to restrain and…
Automobiles
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