1. Dipoles linéaires en sinusoïdal

1. Dipoles linéaires en sinusoïdal

University

11 Qs

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1. Dipoles linéaires en sinusoïdal

1. Dipoles linéaires en sinusoïdal

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Physics

University

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11 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle est la phase instantanée de u(t) ? u(t)=4,24×2×cos(2πf1tπ4)u\left(t\right)=4,24\times\sqrt{2}\times\cos\left(2\pi f_1t-\frac{\pi}{4}\right)  

 2πf1tπ42\pi f_1t-\frac{\pi}{4} 

 π4-\frac{\pi}{4} 

 2πf1t2\pi f_1t 

 4,244,24  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quel nombre complexe est associé à : u(t)=4,24×2×cos(2πf1tπ4)u\left(t\right)=4,24\times\sqrt{2}\times\cos\left(2\pi f_1t-\frac{\pi}{4}\right)  

 [4,24 ; +π4]\left[4,24\ ;\ +\frac{\pi}{4}\right] 

 [4,24 ; π4]\left[4,24\ ;\ -\frac{\pi}{4}\right]  

 [4,24 ×2; +π4]\left[4,24\ \times\sqrt{2};\ +\frac{\pi}{4}\right] 

 [4,24 ×2; π4]\left[4,24\ \times\sqrt{2};\ -\frac{\pi}{4}\right]  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle est la relation entre la tension  u(t)u\left(t\right)  aux bornes d'une résistance  RR  et le courant  i(t)i\left(t\right)  qui la traverse ?

u(t)=R×di(t)dtu\left(t\right)=R\times\frac{\text{d}i\left(t\right)}{\text{d}t}

i(t)=R×du(t)dti\left(t\right)=R\times\frac{\text{d}u\left(t\right)}{\text{d}t}

u(t)=R×i(t)u\left(t\right)=R\times i\left(t\right)

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle est la relation entre la tension  u(t)u\left(t\right)  aux bornes d'un condensateur de capacité  CC  et le courant  i(t)i\left(t\right)  qui le traverse ?

 u(t)=C×di(t)dtu\left(t\right)=C\times\frac{\text{d}i\left(t\right)}{\text{d}t} 

 i(t)=C×du(t)dti\left(t\right)=C\times\frac{\text{d}u\left(t\right)}{\text{d}t} 

 u(t)=C×i(t)u\left(t\right)=C\times i\left(t\right) 

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle est la relation entre la tension  u(t)u\left(t\right)  aux bornes d'une bobine d'inductance  LL  et le courant  i(t)i\left(t\right)  qui la traverse ?

 u(t)=L×di(t)dtu\left(t\right)=L\times\frac{\text{d}i\left(t\right)}{\text{d}t} 

 i(t)=L×du(t)dti\left(t\right)=L\times\frac{\text{d}u\left(t\right)}{\text{d}t} 

 u(t)=L×i(t)u\left(t\right)=L\times i\left(t\right) 

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle est l'impédance complexe  ZR\underline{Z_R}   d'une résistance RR ?

 ZR=[R ω ; +π2]\underline{Z_R}=\left[R\ \omega\ ;\ +\frac{\pi}{2}\right]  

 ZR=[R  ; 0]\underline{Z_R}=\left[R\ \ ;\ 0\right]  

 ZR=[R ; π2]\underline{Z_R}=\left[R\ ;\ -\frac{\pi}{2}\right]  

 ZR=[R  ; +π2]\underline{Z_R}=\left[R\ \ ;\ +\frac{\pi}{2}\right]  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle est l'impédance complexe  ZC\underline{Z_C}   d'un condensateur de capacité CC ?

 ZC=[C ω ; +π2]\underline{Z_C}=\left[C\ \omega\ ;\ +\frac{\pi}{2}\right]  

 ZC=[1C ω ; +π2]\underline{Z_C}=\left[\frac{1}{C\ \omega}\ ;\ +\frac{\pi}{2}\right]  

 ZC=[C ω ; π2]\underline{Z_C}=\left[C\ \omega\ ;\ -\frac{\pi}{2}\right]  

 ZC=[1C ω ; π2]\underline{Z_C}=\left[\frac{1}{C\ \omega}\ ;\ -\frac{\pi}{2}\right]  

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