
Q5-AtivExp-05
Authored by Hans Zimermann
Other
University
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10 questions
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1.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
As perdas do ______ ocorrem nos enrolamentos do transformador.
2.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
As perdas existentes no núcleo do transformador, designam-se por perdas no ______.
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
A figura ilustrada representa um transformador com refrigeração a:
Óleo mineral.
Seco.
Água.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Um transformador tem 100 espiras no primário e 10 espiras no secundário. Quando a corrente do primário for de 1 A, a corrente no secundário será igual a:
0,1A
100A
1A
10A
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Um transformador tem 100 espiras no primário e 10 espiras no secundário. Quando o primário é ligado a uma tensão alternada de 230 V, a tensão de saída no secundário será igual a:
23V
2,3V
0,23V
2300V
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Quando um transformador é alimentado por uma tensão contínua (DC), a tensão à saída do mesmo será:
Depende do número de espiras do primário / secundário.
Metade do valor da entrada (primário).
Zero volts.
1/3 do valor da entrada (primário).
7.
MULTIPLE SELECT QUESTION
10 sec • 1 pt
Dos equipamentos seguintes, indique 2 que usam transformador?
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