
Fundamentos de Electricidad
Authored by Antonio Jose Ramos Valencia
Social Studies
Professional Development
Used 1+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de las siguientes unidades corresponde a la tensión eléctrica?
Ohmios (Ω)
Vatios (W)
Voltios (V)
Amperios (A)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En maquinaria pesada, la corriente continua (DC) se utiliza principalmente en:
Motores hidráulicos
Sistemas de iluminación
Sistemas de control electrónico y arranque
Enfriamiento del motor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La resistencia eléctrica en un componente sirve para:
Aumentar la corriente
Reducir el voltaje
Limitar el paso de corriente
Generar potencia mecánica
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si una lámpara de advertencia en una excavadora funciona con 24V y consume 2A, ¿cuál es el valor de su resistencia?
48 Ω
12 Ω
22 Ω
26 Ω
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Según la ley de Ohm, si aumentamos la resistencia de un circuito y mantenemos el voltaje constante, la corriente:
Aumenta
Disminuye
No cambia
Se vuelve negativa
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En una retroexcavadora, se mide un voltaje de 24V y una resistencia de 8Ω en el motor de arranque. ¿Cuál es la corriente que pasa por el motor?
3 A
2 A
6 A
12 A
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La ley de corrientes de Kirchhoff (KCL) establece que:
La suma de las tensiones en un lazo cerrado es cero
La suma de las corrientes que entran a un nodo es igual a la suma de las que salen
La corriente es igual al voltaje dividido por la resistencia
La potencia en un circuito es constante
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