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Teoria de Circuitos Elétricos 2024-2025

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Considere uma fonte de tensão sinusoidal cujo valor instantâneo é dado por:

Consider a sinusoidal voltage source whose instantaneous value is given by:

 v (t) =Vm \cdot  cos ( \omega \cdot t + \phi)  v (t) =Vm \cdot cos ( \omega \cdot t + \phi)

com   f=923 Hz, Vm=180 Volt , φ =0,9 rad

with  f=923 Hz, Vm=180 Volt , φ =0,9 rad

Qual o valor da fase

Wich is the value for the Phase

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Considere uma fonte de tensão sinusoidal cujo valor instantâneo é dado por:

Consider a sinusoidal voltage source whose instantaneous value is given by:

 v (t) =Vm \cdot  cos ( \omega \cdot t + \phi)  v (t) =Vm \cdot cos ( \omega \cdot t + \phi)

com   f=923 Hz, Vm=180 Volt , φ =0,9 rad

with  f=923 Hz, Vm=180 Volt , φ =0,9 rad

Qual o valor da frequencia angular 

Wich is the value for the angular frequency

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Considere uma fonte de tensão sinusoidal cujo valor instantâneo é dado por:

Consider a sinusoidal voltage source whose instantaneous value is given by:

 v (t) =Vm \cdot  cos ( \omega \cdot t + \phi)  v (t) =Vm \cdot cos ( \omega \cdot t + \phi)

com   f=923 Hz, Vm=180 Volt , φ =0,9 rad

with  f=923 Hz, Vm=180 Volt , φ =0,9 rad

Qual o valor da  tensão em t=3,1ms

Wich is the value for voltage at t=3,1ms

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Considere uma fonte de tensão sinusoidal cujo valor instantâneo é dado por:

Consider a sinusoidal voltage source whose instantaneous value is given by:

 v (t) =Vm \cdot  cos ( \omega \cdot t + \phi)  v (t) =Vm \cdot cos ( \omega \cdot t + \phi)

com   f=923 Hz, Vm=180 Volt , φ =0,9 rad

with  f=923 Hz, Vm=180 Volt , φ =0,9 rad

Qual o valor máximo da tensão

Wich is the maximum value for the voltage

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Considere uma fonte de tensão sinusoidal cujo valor instantâneo é dado por:

Consider a sinusoidal voltage source whose instantaneous value is given by:

 v (t) =Vm \cdot  cos ( \omega \cdot t + \phi)  v (t) =Vm \cdot cos ( \omega \cdot t + \phi)

com   f=923 Hz, Vm=180 Volt , φ =0,9 rad

with  f=923 Hz, Vm=180 Volt , φ =0,9 rad

Qual o valor efetivo da tensão

Wich is the effective value for the voltage

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Considere  i=4,75mA, R1=3404Ω, C1=8,7nF, L1=41μH, t1=19 μs

 

Para  t \geq t1 t \geq t1  indique sendo Vc=Aest e sendo  s1=a1+ j. b1 s1=a1+ j. b1 ,   s2=a2- j. b1 s2=a2- j. b1  indique qual o valor de b1

For   t \geq t1 t \geq t1 , considering Vc=Aest and   s1=a1+ j. b1 s1=a1+ j. b1 ,   s2=a2- j. b1 s2=a2- j. b1  give the value for b1

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Considere  i=4,75mA, R1=3404Ω, C1=8,7nF, L1=41μH, t1=19 μs

 

Para  t \geq t1 t \geq t1  indique sendo Vc=Aest e sendo  s1=a1+ j. b1 s1=a1+ j. b1 ,   s2=a2- j. b1 s2=a2- j. b1  indique qual o valor de a1

For   t \geq t1 t \geq t1 , considering Vc=Aest and   s1=a1+ j. b1 s1=a1+ j. b1 ,   s2=a2- j. b1 s2=a2- j. b1  give the value for a1

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Considere  i=4,75mA, R1=3404Ω, C1=8,7nF, L1=41μH, t1=19 μs

 

Para  t \geq t1  t \geq t1 indique o valor de Vc em regime forçado.

For  t \geq t1 t \geq t1  indicate the value of Vc in steady state 

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Considere  i=4,75mA, R1=3404Ω, C1=8,7nF, L1=41μH, t1=19 μs

 

Para t \geq t1  t \geq t1   indique ao fim de quanto tempo o regime livre se anula. Apresente o resultado em μs com 2 casas decimais

For   t \geq t1 t \geq t1  indicate after how long the transient regime cancels. Give the result in μs to 2 decimal places.

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Considere  i=4,75mA, R1=3404Ω, C1=8,7nF, L1=41μH, t1=19 μs

 

Para  t \leq t1 t \leq t1 considerando que o valor de Vc em regime livre é dado por Vc=A. est indique qual o valor de s

Consider  i=4,75mA, R1=3404Ω, C1=8,7nF, L1=41μH, t1=19 μs

For  t \leq t1 t \leq t1  considering that the transient response is given by Vc=A. est, give the value for s

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