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 253
eplace a de-fective bulb it is only necessary to liftout the containing box by its handlethrough the door in the top of the caseand mount a new bulb in it, after whichthe box can be lowered into place. It isdesirable to have at each installation, aspare bulb box in which a bulb can bekept,… … 1,512 HAWKINS ELECTRICITY of the mercury, which must be broken down so that the currentcan pass. Ques. What is this apparent surface resistance called ? Ans. The negative electrode resistance. Ques. What must be done before any current can pass ? Ans. The negative electrode resistance must be…
Electrical engineering
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