Cuestionario Extra 1
Authored by Pablo Rodríguez
Specialty
2nd Grade
Used 5+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La corriente de vacío de un transformador es del orden del...
1-5% In
10-20% In
Depende de cada transformador
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Si el espesor de las chapas del núcleo magnético fuese muy elevado, el parámetro Rfe sería...
muy elevado
muy reducido
el espesor de las chapas no afecta a Rfe
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dos transformadores idénticos cumplen que NA>NB. Señale la afirmación correcta
Las pérdidas de potencia activa en el ensayo de vacío serían mayores en B
RfeA>RfeB
RccA<RccB
Ninguna de las anteriores
4.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
La reactancia de magnetización Xm representa las pérdidas de potencia ________ necesarias para magnetizar el transformador
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cuanto mayor sea la permeabilidad del circuito magnético, la reactancia de magnetización Xm será...
menor
mayor
dependerá de la potencia nominal
Diosito qué me está preguntando
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El primario de un transformador que abastece a una urbanización será el lado de...
BT
AT
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