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grrr
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  • Solution

Salut @grrr ! 

 

Alors on sait que :

- T1 = 500 ms

- T2 = 50 ms 

 

Il te reste à appliquer Mz (pour 90°) = M0 (1- e -t/T1) = M0 (1- e -500/500) = M0 (1- e-1) = M0 (1- 0,37) = M0 x 0,63 donc pour t = 500 ms Mz n'est pas négligeable car il est égal a 63% de M0 

 

Donc item D faux 

 

J'espère que ça t'a aidé n'hésite pas si t'as pas compris ! 

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