Network Theory And Analysis MCQ Questions & Answers | ECE

Two linear capacitors C₁ (with an initial voltage of zero across it) and C₂, (with V volts across it initially) and a resistor R are wired into a series circuit which is closed at t = 0.

The following arrangement consists of an ideal transformer and an attenuator which attenuates by a factor of 0.8. An AC Voltage V_WX1 = 100 V is applied across WX to get an open circuit voltage V_YZ1 across YZ. Next, an ac voltage V_YZ2 = 100 V is applied across YZ to get open circuit voltage V_WX2 across WX. Then, $$\frac{{{{\text{V}}_{{\text{Y}}{{\text{Z}}_1}}}}}{{{{\text{V}}_{{\text{W}}{{\text{X}}_1}}}}},\,\frac{{{{\text{V}}_{{\text{W}}{{\text{X}}_2}}}}}{{{{\text{V}}_{{\text{Y}}{{\text{Z}}_2}}}}}$$   are respectively

In the circuit shown below, the current I is

The current i through the 1 Ω resistor shown in figure below is:

When L is doubled and C is halved, the resonance frequency of series tuned circuit becomes

Consider the following statements for a symmetrical T section
1. Z₁₁ and Z₂₂ are equal
2. Z₁₂ and Z₂₁ are equal
3. Z₁₁ and Z₁₂ are equal
4. Z₂₁ and Z₂₂ are equal
Which of these statements are correct?

Determine Y₁₂ for the above circuit.

What is the Thevenin resistance seen from the terminals AB of the circuit shown in the figure below?

After a capacitor has charged for 1 ms, what percentage of current remains in the capacitor

In the circuit shown, 2-port network N has Z₁₁ = 10³ Ω, Z₁₂ = 10 Ω, Z₂₁ = -10⁶ Ω and Z₂₂ = 10⁴ Ω. The current gain $$\frac{{{{\text{I}}_2}}}{{{{\text{I}}_1}}}$$ is