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Teoria de Circuitos Elétricos 2024-2025

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considere v1(t)=10,5 cos(50 t)

em que Ra=8,23Ω e La=14,07 H

Considerando  Za=ρa exp(j φa ) indique o valor de  Φa.

 Apresente o resultado em radianos e com 3 casas decimais

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considere v1(t)=10,5 cos(50 t)

em que Ra=8,23Ω e La=14,07 H

Considerando que a amplitude complexa da corrente em Ra é dada por  Ia=ρi exp(j φi ) indique o valor de φi

Apresente o resultado em radianos e com 3 casas decimais

View this question

considere v1(t)=10,5 cos(50 t)

em que Ra=8,23Ω e La=14,07 H

Sendo que a amplitude complexa da tensão aos terminais da bobine dada por  vLL exp(j φL ) indique o valor de ρL

 Apresente o resultado com 2 casas decimais.

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considere v1(t)=10,5 cos(50 t)

em que Ra=8,23Ω e La=14,07 H

Sendo que a amplitude complexa da tensão aos terminais da bobine dada por vLL exp(j φL ) indique o valor de φL

 Apresente o resultado em radianos e com 4 casas decimais.

View this question

considere v1(t)=10,5 cos(50 t)

em que Ra=8,23Ω e La=14,07 H

Considerando que a amplitude complexa da corrente em Ra é dada por  Ia=ρi exp(j φi ) indique valor de  ρi.

 Apresente o resultado  em miliAmpère e com 3 casas decimais

View this question

considere v1(t)=10,5 cos(50 t)

em que Ra=8,23Ω e La=14,07 H

Considerando  Za=ρa exp(j φa ) indique o valor de ρa

View this question

Consider the circuit represented in a) where C1=7,60 nF, R1=130,0 KΩ and  R2=208,1 KΩ and V1=10,9 .

What is the value of Rth, in KΩ, in figure b) for which circuit b) is equivalent to circuit a)

(give your answer using 3 decimals)

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Consider the circuit represented in a) where C1=9,55 nF, R1=169,3 KΩ and  R2=265,6 KΩ and V1=2,5 .

What is the value of Rth, in KΩ, in figure b) for which circuit b) is equivalent to circuit a)

(give your answer using 3 decimals)

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Consider the circuit represented in a) where C1=5,23 nF, R1=136,2 KΩ and  R2=177,8 KΩ  and v1=10,9

Consider circuit b) and the values for Rth and Vth previously obtained.

Consider that after having been set to V1 for a long time, the voltage source is set to Zero. Consider this instant as t=0.

Should the transient response be  given by

Vctrans(t)= A. es.t

 Please give the value for parameter A

Hint: please have in mind that C1 is in nF and the resistors are in KΩ

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Consider the circuit represented in a) where C1=5,23 nF, R1=136,2 KΩ and  R2=177,8 KΩ .

Consider circuit b) and the values for Rth and Vth previously obtained.

Consider that after having been set to V1 for a long time, the voltage is set to Zero. Consider this instant as t=0.

Sould the transient response be  given by

Vctrans(t)= A. es.t

 Please give the value for parameter s

Hint: please have in mind that C1 is in nF and the resistors are in KΩ

View this question

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