International Library of Technology · Scranton, International Textbook Co. · leaf 82
terminal of thevoltmeter to one terminal of the dynamo, and the otherterminal of the voltmeter to the frame of the machine, asrepresented in Fig. 25, where T and T^ are the terminals ofthe dynamo, and V and F, two positions of the voltmeter,connected as described above. If in either position the… … Fig. 25. terminal 7^, and vice versa. If the needle shows a deflec-tion in botJi positions, but seems to vibrate or tremble, thearmature or commutator is probably grounded. If in eithercase the deflection does not amount to more than about -^-^the total E. M. F. of the machine, the ground is not…
Electrical engineering
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