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 82
stance of the rheostat accordingly, TESTING AND TESTING APPARATUS 501 a value will soon be found, which when varied slightly eitherway, will reverse the deflection of the galvanometer needle.Now remove the battery connection from tip 1, and place it onthe tip 4, thus throwing the whole battery into… … Fig. 579.—Diagram of the Queen dial decade portable testing set. Its dimensions are 9Hlong, 7 wide, and 7 deep, and weighs 11 J^o pounds. The resistances are arranged upon thedial decade plan, being placed in circuit by means of a rotating switch contact. Theswitches are so constructed that they…
Electrical engineering
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