What is the open-circuit test in transformers? I - It is also called the no-load test. II - It is performed with the secondary open and the nomina...
What is the open-circuit test in transformers?
I - It is also called the no-load test.
II - It is performed with the secondary open and the nominal voltage applied to the primary.
III - It is used to obtain the equivalent impedance in parallel.
IV - It is used to measure the applied voltage, open-circuit current, and power.
a) I and II are correct.
b) II and IV are correct.
c) I, II, and IV are correct.
d) II, III, and IV are correct.
I - It is also called the no-load test.
II - It is performed with the secondary open and the nominal voltage applied to the primary.
III - It is used to obtain the equivalent impedance in parallel.
IV - It is used to measure the applied voltage, open-circuit current, and power.
a) I and II are correct.
b) II and IV are correct.
c) I, II, and IV are correct.
d) II, III, and IV are correct.
💡 1 Resposta
Ed 
O teste em circuito aberto em transformadores é um teste realizado com a finalidade de medir a corrente de excitação e a perda no núcleo do transformador. As afirmativas corretas são: I - Também é chamado de teste sem carga. II - É realizado com o secundário aberto e a tensão nominal aplicada ao primário. IV - É usado para medir a tensão aplicada, a corrente em circuito aberto e a potência. Portanto, a alternativa correta é a letra b) II e IV estão corretas.
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