Transient Analysis

Which element will be open circuit at  $t<0$   ?

• Resistor

• Inductor

• Capacitor

Given the value of Vs = 20 V, R = 5 Ω and L = 2 H. Calculate the value of current at  $t<0$  .

• 1 A

• 4 A

• 20 A

To solve this circuit, which rules that u need to used

• Kirchoff current law (KCL)

• KIrchoff voltage law (KVL)

• Ohm's Law

What is the value of source at natural response?

• 0

• Ke^-st

• -sKe^-st

Which one is the correct ordinary differential equation (ODE) when the switching is close?

• $\frac{dV_c\left(t\right)}{dt}+\frac{1}{RC}V_c\left(t\right)=V_s\left(t\right)$

• $\frac{dV_c\left(t\right)}{dt}+\frac{1}{RC}V_c\left(t\right)=\frac{1}{RC}V_s\left(t\right)$

• $\frac{dV_c\left(t\right)}{dt}+V_c\left(t\right)=\frac{1}{RC}V_s\left(t\right)$

Which one is the value of assumed solution for parabolic?

• $k_2$

• $k_2e^{-st}$

• $k_2t+k_3$

• $k_2t^2+k_3t+k_4$

 $\frac{di_L\left(t\right)}{dt}+\frac{R}{L}i_L\left(t\right)=\frac{1}{L}v_s\left(t\right)$  

From the given ODE, find the natural response,  $i_n\left(t\right)$ if the value of  $v_s=10\ V,\ R=6\ \Omega,\ L\ =2\ H$  .

•  $Ke^{3t}$ 

•  $Ke^{-3t}$  

•  $10Ke^{-3t}$  

 $\frac{dv_c\left(t\right)}{dt}+\frac{1}{RC}v_c\left(t\right)=\frac{1}{RC}v_s\left(t\right)$  
Find the force response of voltage across the capacitor,  $v_f\left(t\right)$  at  $t\ge0$  . Given the value of  $v_s=15\ V,\ R\ =\ 10\ \Omega,\ C\ =2\ F$  

• 2 V

• 10 V

• 15 V