Circuit Theory by A. Nagoor Kani | 9789387572478 | 9387572471

Circuit Theory

468 SOLVED PROBLEMS

Question: 2.Q.64

In the circuit of Fig. 1, compute Vx . Demonstrate the reciprocity theorem by interchanging the positions of the source and response. ...

Verified Answer:

Case i : To solve

\overline{V}_x

in...

Question: 2.Q.63

In the circuit of Fig. 1, compute I x . Demonstrate the reciprocity theorem by interchanging the positions of the source and I x. ...

Verified Answer:

Case i : To solve

\overline{I}_ x

i...

Question: 2.Q.62

In the circuit of Fig. 1, calculate Vx. Prove the reciprocity theorem by interchanging the positions of the 12 A source ...

Verified Answer:

Case i : To solve

V_x

in the given ...

Question: 3.Q.1

In the circuit of Fig. 1, a steady current of 5 A is established through the inductance by connecting it to a current source. At time t = 0, the current source is disconnected and switch S1 is closed to connect a 20 Ω resistance across the inductance. Find the expression for i (t) and sketch ...

Verified Answer:

Let,

{\mathcal{L}}\{i(t)\}\ =I({{s}})[/latex...

Question: 3.8

An RL series circuit excited by a sinusoidal source e (t) = 10 sin 100t V by closing the switch at t = 0. Take R = 10 Ω and L = 0.1 H. Determine the current i (t) flowing through the RL circuit. ...

Verified Answer:

Given that, e (t) = 10 sin 100t V Let,

{E}(...

Question: 3.23

An RC circuit is excited by a sinusoidal source of voltage 50 sin 314 t V. Find the voltage and current in the capacitor. Take R = 100 Ω and C = 20 µF. ...

Verified Answer:

Given that, e(t) = 50 sin 314t V R = 100 Ω and [la...

Question: 3.24

In the circuit of Fig. 1, the switch remains in position-1 for a long time. At t = 0, the switch is moved from position-1 to position-2. Find an expression for the current through the RC circuit. ...

Verified Answer:

Case i : Switch in position-1 In position-1, the c...

Question: 3.27

In the RLC circuit of Fig. 1, the inductor has an initial current of 10 A, when the switch is closed at t = 0. Find an expression for the current i (t). ...

Verified Answer:

Let,

\mathcal{L}\{i(t)\}=I(\mathbf{s})[/la...

Question: 1.43

Determine the voltages across various elements of the circuit shown in Fig. 1, using the node method. ...

Verified Answer:

The graph of the given circuit is shown in Fig. 2....

Question: 5.30

A voltage of 115 V at a frequency of 10 kHz is applied to the primary of the coupled circuit shown in Fig. 1. Determine the total impedance referred to primary and the currents in primary and secondary. ...

Verified Answer:

Given that,

f=10 kHz , L _p=200 \mu H , \q...