
Transformadores
Authored by João Costa
Professional Development
Professional Development
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um condutor atravessado por uma corrente gera à sua volta...
campo elétrico
Uma corrente negativa
Um campo Magnético
Uma corrente positiva
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A releção de transformação é dada por
N2/I2
N1/N2
R2/N1
N2/N2
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Para a mesma potência ao elevar a tensão reduzimos a
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual destes NÂO está associado ao transformador
Núcleo
Enrolamento
Campo elétrico
Fluxo magnético
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Num transformador elevador
N1>N2
N2>N1
N1=N2
Nenhuma das anteriores
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Num transformador real
P1=P2
P1<P2
P1>P2
Nenhuma das respostas
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
No ensaio de curto circuito circula a corrente
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