Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)
Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 30
sured in degrees. If the pointer were at GALVANOMETERS. 7 45° the angle would be one of 45° or half a rightangle (90°). T is a straight line perpendicular to the diameter but cut by N. The portion between the diame-ter line and where it is cut by N is the tangent.Fig. 2 represents an angle of about… … Fig. 2. Fig. 3. Fig. 4. Fig. 5 length very rapidly, far more so than the deflec-tion angle. To make a comparison, let the needle be de-flected 5°, its tangent will be .0875, double thedeflection, the tangent of 10° is .1763, more thandouble the one of 5°. Deflect the needle to 30° or six times its…
Electric testing · Electric apparatus and appliances
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
