Electrical Circuit Analysis

Define the concept of duality and dual networks.

Define effective or RMS value of AC Circuit.

Explain the DOT convention in coupled circuit with suitable example.

Explain initial and final condition in network elements.

Write the condition of symmetry and reciprocal for ABCD parameters.

Write down the necessary condition of stability of a network function.

Explain Power triangle with diagram.

State and explain maximum power transfer theorem.

Write a short note on a series RLC circuit resonance.

Write down the definition of Laplace Transform.

Apply superposition theorem to the given circuit (figure 1), to find the voltage drop V across the 5 ohm resistor.

State and explain Reciprocity Theorem. Also, write the steps for solving a network using Reciprocity Theorem.

What is the relationship between line and phase voltages and currents in a star connection? Also, explain power factor, apparent power and reactive power.

In the figure 2, switch is closed at position A at t=0, the switch is moved to position B. Find the current in both the cases.

Find the resonant frequency for the parallel circuit shown in figure 3.

The Z-parameters of a two port network are $Z_{11}=10\text{ ohms}$, $Z_{22}=20\text{ ohms}$, $Z_{12}=Z_{21}=5\text{ ohms}$. (a) Find ABCD parameters (b) Find hybrid parameters of this two port network

State and explain the restriction on the location of poles and zeros for driving point function. What is the physical significance of this? Explain.

Find Thevenin's equivalent circuit for network shown in figure 4 at the left of terminals n-y.

Find the transient responses of series RL and RC circuit having sinusoidal excitation.

Find the Laplace transform of the function $x(t)=\mu (t)-\mu (t-\theta )$. Also a function is given by $X(s)=\frac{2(s+2)}{(s+1)(s+3)}$. Find its value using the initial and final value theorem.

Explain and establish all different types of interconnections of 2 two port networks.

A 3 phase load has a resistance of 10 ohms in each phase and is connected in (a) Star and (b) Delta against a 400 Volts three phase supply. Compare the power consumed in both the cases.