Gyrostatic Action of Armatures

Owing to gyrostatic action a rotating armature resists any change of direction of its axis. On ships and in railway motors which have to turn curves this action occurs. A 148 lb. armature running at 1,300 revolutions per minute may pre with 30 lbs. on each journal as the ship rolls through an angle of 20° in 16 seconds. 283   STANDARD ELECTRICAL DICTIONARY. **H** (a) The symbol for the horizontal component of the earth's magnetization. (b) The symbol for the intensity of a magnetizing force or field. The symbol H, as it is generally used, may mean either the number of dynes which act upon a unit pole, or the number of lines of force per centimeter. (c) The symbol for the unit of self-induction.