s01 t01 -d1/d26 © socotec 2012 - d82101 - e12 - diaporama electric units
TRANSCRIPT
![Page 1: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/1.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D1/D26
ELECTRIC UNITSELECTRIC UNITS
![Page 2: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/2.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D2/D26
The electric principles
What are the different electric source you kwnow ?
![Page 3: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/3.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D3/D26
There is two sources :
Direct current Alternative current
The electric principles
+ -
ACCU FLASH
12 V
Dynamo
Alternateur
![Page 4: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/4.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D4/D26
Direct current sources are polarized with positive and negative poles
Direct current
Direct current could be produced by an electrochemical generator like a battery or by a swinging device like a dtnamo or by cells.
+ -
ACCU FLASH
12 V
Dynamo
![Page 5: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/5.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D5/D26
Uses of direct current
The direct current is used to supply electric devices like portable electric drills or electric vehicles…
![Page 6: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/6.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D6/D26
Direct current representation
The direction of electrons is always the same
![Page 7: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/7.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D7/D26
Alternative current sources
Un Alternateur produit l’électricité
il transforme une énergie mécanique en énergie électrique
En général, on utilise la force de l’eau ( centrale hydraulique ) ou de la vapeur ( centrale thermique ou nucléaire ) pour faire tourner une turbineMais, on peut utiliser la force du vent ( les éoliennes )
We can also use mechanical energy produced by thermical engine, that what we calle a generator.
![Page 8: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/8.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D8/D26
Alternative current sources
The alternative current is generally used for houses and company electrical installations.
![Page 9: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/9.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D9/D26
Alternative current representation
Le Courant Alternatif change de sens périodiquement Une Période se divise en deux Alternances
The frequency of alternative current match with the number of period per seconds.
The frequency is express in Hertz.
![Page 10: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/10.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D10/D26
Parallel of water : the Voltage
The Voltage is an electric potential difference
Is similar to a level difference
The Voltage (U) is express in VOLT (V)
![Page 11: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/11.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D11/D26
Parallel of water : the current intensity (amperage)
The Amperage is similar to a throughput
The current intensity ( I ) is express in Amp ( A )
![Page 12: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/12.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D12/D26
Parallel of water : electric resistance
The electric resistance is similar to pipes sections
The electric resistance ( R ) is express in OHM ( Ω )
![Page 13: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/13.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D13/D26
Ohm’s law
Volatge ( U ), electric resistance( R ) and intensity ( I )
are linked by the Ohm’s law:
U = R x I
Exercice : What will be the intensity value of a current passing through a 100 Ω device supplied by a 12 V source?
![Page 14: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/14.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D14/D26
The unitsThe units
![Page 15: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/15.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D15/D26
Units
What units are in this light bulb ?
Volt
watt
![Page 16: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/16.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D16/D26
Units
What units are in this fuse ?
Intensity - Amp
![Page 17: S01 T01 -D1/D26 © SOCOTEC 2012 - D82101 - E12 - Diaporama ELECTRIC UNITS](https://reader031.vdocument.in/reader031/viewer/2022020712/551a8cc5550346b52d8b5bfa/html5/thumbnails/17.jpg)
© SOCOTEC 2012 - D82101 - E12 - Diaporama S01 T01 -D17/D26
Units
What units are in this speaker ?
8 Ω resistance - Ohms