
Machine Electrique BT3 Elo
Quiz
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Education
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University
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Practice Problem
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Hard
Ahmad Eid
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L'essai en court-circuit sur un transformateur permet de trouver:
les pertes Joules (pertes cuivre)
les pertes Fer
le rendement
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un transformateur monophasé est dit "élévateur de tension" lorsque la relation entre les spires au primaire N1 et les spires au secondaire :
N1<N2
N1>N2
N1=N2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dans un transformateur triphasé dont
son couplage est:Dyn
Dd
Yd
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dans un transformateur essayé en court-circuit U1CC doit être :
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un transformateur qui élève la tension est dit :
elevateur de tension
abaisseur de tension
adapteur de tension
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est l'unité de puissance des transformateurs ?
KW
KVAR
KVA
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sur une plaque signalétique d'un transformateur on lit 'diélectrique ONAN' . Que signifie la première lettre de cette abréviation ?
Huile minérale
Air
Gaz
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