**2005**

1. For the circuit in figure, the instantaneous current i

_{1}(t) is

**Solution :**https://www.youtube.com/watch?v=BcmlFVwT5C4

**2007**

2. In the AC network shown in the figure, the phasor voltage V

_{AB}(in volts) is:

**Solution :**https://www.youtube.com/watch?v=CNz1YebFlDw

**2008**

**Common Data Questions: 3 & 4**

The following series RLC circuit with zero initial conditions is excited by a unit impulse function δ(t).

3. For t > 0, the output voltage V

_{c}(t) is

**Solution :**https://www.youtube.com/watch?v=DB4jmdoaFIk

4. For t > 0, the voltage across the resistor is

**Solution (3 & 4) :**https://www.youtube.com/watch?v=nn6PggFjKgA

**2009**

5. The time domain behaviour of an RL circuit is represented as shown below. For an initial current of i(0) = V

_{o}/R, the steady state value of the current is given by

**Solution :**https://www.youtube.com/watch?v=VBFOXuUEuKE

**2010**

6. The current I in the circuit shown is

a) - j1 A

b) j1 A

c) 0 A

d) 20 A

**Solution :**https://www.youtube.com/watch?v=dKZILrD0vOM

**2011**

7. In the circuit shown below, the Norton equivalent current in amperes with respect to the terminals P and Q is

a) 6.4 - j 4.8

b) 6.56 - j 7.87

c) 10 + j 0

d) 16 + j 0

**Solution :**https://www.youtube.com/watch?v=HsLyDiBmxx4

8. The circuit shown below is driven by a sinusoidal input V

_{i}= V

_{p}cos(t/RC). The steady state output V

_{o}is

**Solution :**https://www.youtube.com/watch?v=51KGart3zsQ

9. In the circuit shown below, the current I is equal to

**Solution :**https://www.youtube.com/watch?v=t9esPoyU5tY

**2012**

10. In the circuit shown below, the current through the inductor is

**Solution :**https://www.youtube.com/watch?v=bD4nQW3U4SA

**2014**

11. In the circuit shown in the figure, the value of node voltage V

_{2}(in volts) is

a) 22 + j 2

b) 2 + j 22

c) 22 – j 2

d) 2 – j 22

**Solution :**https://www.youtube.com/watch?v=L9li2Lu26iU

12. The steady state output of the circuit shown in the figure is given by y(t) = A(ω) sin(ωt + φ(ω)).

If the amplitude |A(ω)| = 0.25, then the frequency ω is

**Solution :**https://www.youtube.com/watch?v=IIlI8e2TeDg

13. In the circuit shown in the figure,

the value of V

_{o}(t) (in volts) for t → ∞ is ___________

**Solution :**https://www.youtube.com/watch?v=SHT_OgLFZmE

**2015**

14. In the circuit shown, assume that diodes D

_{1}and D

_{2}are ideal. In the steady state condition, the average voltage V

_{ab}(in volts) across 0.5 µF capacitor is ____________

**Solution :**https://www.youtube.com/watch?v=2ZfO7mplk4g

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