
Funda 2 p1
Quiz
•
Others
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1st Grade
•
Practice Problem
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Easy
wen Hernandez
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Al determinar la inductancia de una bobina cuya longitud es 1.5cm el diametro del nucleo es 0.5 cm tiene, 350 vueltas, y la permeabilidad del nucleo es de 0.25х 10-3 H/m
a) 40 mH
b) 40 H
c) 40 nH
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Al colocar dos conductores uno al lado del otro, siempre existe algo de capacitancia entre ellos. Por tanto, cuando se colocan muchas vueltas de alambre muy cerca una de otra en una bobina, cierta cantidad de capacitancia parásita aparece, esta es llamada
a) capacitancia de devanado
b)capacitancia de inducción
c)capacitancia inherente
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Que ley se expresa en la siguiente formula.
a) ley de kirchoft
b) ley de ohm
c) ley de faraday
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La siguiente formula sirve para encontrar el
a) resistencia interna
b) corriente inducida
c) voltaje inducido
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine la inductancia de la bobina mostrada en la figura 13-5. La permeabilidad del núcleo es de 0.25 X 10-3 H/m.
a) 49 mH
b) 40 mH
c) 50 mH
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una bobina produce un flujo magnético total de 50 mWb, y 20 mWb enlazan la bobina 2.
¿Cuál es el coeficiente de acoplamiento, k?
a) k= 0.4
b) k= 0.7
c) k= 0.8
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Que provoca un cambio de la corriente
a) un cambio en el campo magnético
b) un cambio en el campo inductivo
c) un cambio en el campo electromagnético
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