Elementary Electrical Testing
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In our eReader you can find the full English version of the book. Read Elementary Electrical Testing Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Elementary Electrical Testing
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These conditions obtain when an uneven bridge or ratio is used in making measurements.
FIG. 18.
EXPERIMENT XI THE SLIDE WIRE BRIDGE In the slide-wire form of bridge A and B consist of a single wire of uniform resistance. Contact may be made at any point on this wire, and a scale is provided to determine the position of contact. See Fig. 19. The galvanometer is preferably con- nected as shown, an unknown resistance is inserted at X and a box of coils at R. The slide- wire contact is at first pla...ced cen- trally, and an approximate balance secured by varying R. A place is then found on the slide wire where perfect balance is secured.
Since the scale is divided into a thousand parts, the resistance of X can be closely determined by simple proportion.
EFFECT OF TEMPERATURE 31 EXPERIMENT XII THE EFFECT OF TEMPERATURE ON THE RESISTANCE OF A LAMP FILAMENT* Apparatus: 110- volt direct current; series lamp resistance or any suitable adjustable resistance; switch with 6-ampere fuses; ammeter; voltmeter; lamps to be tested.
What to read after Elementary Electrical Testing?
You can find similar books in the "Read Also" column, or choose other free books by Western Electrical Instrument Co to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
These conditions obtain when an uneven bridge or ratio is used in making measurements.
FIG. 18.
EXPERIMENT XI THE SLIDE WIRE BRIDGE In the slide-wire form of bridge A and B consist of a single wire of uniform resistance. Contact may be made at any point on this wire, and a scale is provided to determine the position of contact. See Fig. 19. The galvanometer is preferably con- nected as shown, an unknown resistance is inserted at X and a box of coils at R. The slide- wire contact is at first pla...ced cen- trally, and an approximate balance secured by varying R. A place is then found on the slide wire where perfect balance is secured.
Since the scale is divided into a thousand parts, the resistance of X can be closely determined by simple proportion.
EFFECT OF TEMPERATURE 31 EXPERIMENT XII THE EFFECT OF TEMPERATURE ON THE RESISTANCE OF A LAMP FILAMENT* Apparatus: 110- volt direct current; series lamp resistance or any suitable adjustable resistance; switch with 6-ampere fuses; ammeter; voltmeter; lamps to be tested.
What to read after Elementary Electrical Testing?
You can find similar books in the "Read Also" column, or choose other free books by Western Electrical Instrument Co to read onlineMoreLess
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