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 |
Dentro del libro
Resultados 1-5 de 76
Página 2
... becomes an impor- tant factor in determining the resultant electrification . The end of the zinc outside the liquid will be found to possess properties similar to those of the sealing - wax after it has been rubbed with fur . It is ...
... becomes an impor- tant factor in determining the resultant electrification . The end of the zinc outside the liquid will be found to possess properties similar to those of the sealing - wax after it has been rubbed with fur . It is ...
Página 4
... becomes convenient to picture to ourselves the propagation by means of lines of force , travelling through an ... become endowed with a definite meaning . There are three features about these lines of force to which we may draw attention ...
... becomes convenient to picture to ourselves the propagation by means of lines of force , travelling through an ... become endowed with a definite meaning . There are three features about these lines of force to which we may draw attention ...
Página 22
... becomes necessary to understand the method of comparing the areas of circles . The area of a circle varies as the square of its diameter ; for example , if we have two circles , one having a diameter 22 CHAP . II . Electrical Engineering.
... becomes necessary to understand the method of comparing the areas of circles . The area of a circle varies as the square of its diameter ; for example , if we have two circles , one having a diameter 22 CHAP . II . Electrical Engineering.
Página 31
... becomes a matter of minor importance . For coils of high resistance it is necessary to choose a metal whose specific resistance is high ; otherwise the length of wire would probably be inconveniently great . For low resistances , how ...
... becomes a matter of minor importance . For coils of high resistance it is necessary to choose a metal whose specific resistance is high ; otherwise the length of wire would probably be inconveniently great . For low resistances , how ...
Página 39
... becomes necessary , when employing some dynamo - electric machines , to reduce the electrical output in response to a correspondingly reduced demand made upon it by the external circuit ; and this can be done by joining extra resistance ...
... becomes necessary , when employing some dynamo - electric machines , to reduce the electrical output in response to a correspondingly reduced demand made upon it by the external circuit ; and this can be done by joining extra resistance ...
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.