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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Página 38
... galvanometer as a set of ' shunt coils , ' having respectively , and of the resistance of the galvanometer with which it 9 is intended to be used . ( The nature and. 38 CHAP . 11 . Electrical Engineering.
... galvanometer as a set of ' shunt coils , ' having respectively , and of the resistance of the galvanometer with which it 9 is intended to be used . ( The nature and. 38 CHAP . 11 . Electrical Engineering.
Página 39
... galvanometer coils are of copper , and it is essential that the shunt coils should vary in resistance exactly with the galvanometer coils , in order that the ratio between the two may remain constant . It sometimes happens , however ...
... galvanometer coils are of copper , and it is essential that the shunt coils should vary in resistance exactly with the galvanometer coils , in order that the ratio between the two may remain constant . It sometimes happens , however ...
Página 101
... galvanometer ; but in order to obtain accurate results , one important point must be carefully attended to in designing the instrument , for the foregoing proof only holds good when the two forces forming a pair act parallel to each ...
... galvanometer ; but in order to obtain accurate results , one important point must be carefully attended to in designing the instrument , for the foregoing proof only holds good when the two forces forming a pair act parallel to each ...
Página 102
... galvanometer are satisfied ; the needle being too short to permit of its poles being moved into an irregular or variable part of the field . With a ring 6 inches in diameter we can , in fact , use a needle three - quarters of an inch in ...
... galvanometer are satisfied ; the needle being too short to permit of its poles being moved into an irregular or variable part of the field . With a ring 6 inches in diameter we can , in fact , use a needle three - quarters of an inch in ...
Página 103
... galvanometer in a circuit may decrease the current we desire to measure . Bearing all these points in mind , we will now consider a really practical instrument for the measurement of current strength , selecting for description the ...
... galvanometer in a circuit may decrease the current we desire to measure . Bearing all these points in mind , we will now consider a really practical instrument for the measurement of current strength , selecting for description the ...
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.