
Contrôle d'hyperfréquences (Master EEA: FSTS)
Authored by JAMAL ZBITOU
Physics
University
Used 4+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Le modèle équivalent en
mode TEM d'un tronçon de ligne de longueur dx est donné sur la figure ci-après, La ligne est sans pertes lorsque:
R = 0 ; G = ∞
R = ∞ ; G = ∞
R = 0 ; G = 0
R = ∞ ; G = 0
2.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Quelles sont les supports de transmission qui possèdent un mode TEM ou quasi-TEM?
Ligne Micro-ruban
Guide d'ondes rectangulaire
Ligne Coaxiale
Guide d'ondes circulaire
3.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Comment peut-on vérifier la réflexion au niveau d'une ligne de transmission?
4.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Est ce que l'utilisation d'un transformateur quart d'onde permet d'adapter l'impédance dans une large bande de fréquence?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quelle est la représentation correcte sur l'abaque de Smith des impédances dans le cas : d'un Court Circuit (CC), d'un Circuit Ouvert (CO) et d'une charge adaptée?
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
On suppose qu'on souhaite adapter l'impédance avec le transformateur quart d'onde ci-après:
Quelle est la valeur de l'impédance caractéristique du transformateur? sachant que Ze=60Ohm et Zs=100Ohm
Zc=71Ohm
Zc=77.46Ohm
Zc=80Ohm
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
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