Electrical Engineering for Electric Light Artisans and Students: (embracing Those Branches Prescribed in the Syllabus Issued by the City and Guilds Technical Institute)Longmans, Green, 1895 - 753 páginas |
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Resultados 1-5 de 90
Página 96
... rotation east and west , point with its north pole vertically downwards ; but if the plane of rotation were north and south , the needle would , in London , come to rest with the north - seeking pole dipping downwards , and making an ...
... rotation east and west , point with its north pole vertically downwards ; but if the plane of rotation were north and south , the needle would , in London , come to rest with the north - seeking pole dipping downwards , and making an ...
Página 118
... rotate , and the angle of rota- tion will be exactly proportional to the amount of stretching , the angle being considerable even for a small extension of the spring . A reference to fig . 64 will show how these 118 CHAP . IV ...
... rotate , and the angle of rota- tion will be exactly proportional to the amount of stretching , the angle being considerable even for a small extension of the spring . A reference to fig . 64 will show how these 118 CHAP . IV ...
Página 119
... p is also rigidly connected to the screw - head , H , the upper end of the spring cannot rotate , therefore when the tube T is sucked down the lower end of the spring rotates , carrying with it. CHAP . IV . 119 Ayrton and Perry Ammeter.
... p is also rigidly connected to the screw - head , H , the upper end of the spring cannot rotate , therefore when the tube T is sucked down the lower end of the spring rotates , carrying with it. CHAP . IV . 119 Ayrton and Perry Ammeter.
Página 120
... rotation , the usual horizontal mirror being provided to avoid errors due to parallax . The scale is divided into equal divisions representing amperes and fractions of an ampere , but as the iron does not become saturated until the ...
... rotation , the usual horizontal mirror being provided to avoid errors due to parallax . The scale is divided into equal divisions representing amperes and fractions of an ampere , but as the iron does not become saturated until the ...
Página 122
... rotate the curved piece into the centre , raises it against the force of gravity , through a distance depending upon the strength of the current . The index attached to the arbor travels , therefore , over the scale which is placed ...
... rotate the curved piece into the centre , raises it against the force of gravity , through a distance depending upon the strength of the current . The index attached to the arbor travels , therefore , over the scale which is placed ...
Otras ediciones - Ver todas
Electrical Engineering for Electric Light Artisans and Students: (Embracing ... Sir William Slingo,Arthur Brooker Sin vista previa disponible - 2015 |
Electrical Engineering for Electric Light Artisans and Students: (Embracing ... William Slingo,Arthur Brooker Sin vista previa disponible - 2015 |
Términos y frases comunes
acid alternating current ammeter amount ampere-hours amperes apparatus arc lamp armature core battery brass brushes candle candle-power carbon cell commutator conductor connected considerable convolutions copper Crown 8vo current flowing current strength curve Daniell cell deflection developed diameter direct current direction dynamo eddy currents effect electrical electro-magnet electro-motive force employed equal external circuit external resistance field field-magnet coils filament fixed galvanometer heat illustrated in fig inch increase instrument insulated lamp length light lines of force machine magnetic magnetising maximum measured mercury metal motor needle negative number of lines obtained ohms pair parallel piece placed plates pole pole-pieces portion position potential difference practice pressure proportional reduced result revolutions per minute ring rotation round screw secondary self-induction shaft shown in fig shunt soft iron solenoid speed steel strip sulphate surface switch temperature terminals tion tube varies voltmeter volts watts wire wound zinc
Pasajes populares
Página 635 - To explain the construction of the common barometer, and to shew that the mercury is sustained in it by the pressure of the air on the surface of the mercury in the basin.
Página 582 - ... a few words on the subject may not be out of place.