List of top Electronics and Communication Engineering Questions

Among the four networks, N1, N2, N3, and N4, given in the following figure, the networks having identical driving point function are
four networks, N1, N2, N3, and N4,
The 2-port admittance matrix of the circuit shown is given by
2-port admittance matrix
The mesh current method
(I) Works with both planar and non-planar circuits
(II) Uses Kirchhoff’s voltage law
Which of the above is correct?
If there are 5 branches and 4 nodes in the graph, then the number of mesh equations that can be formed are?
The current waveform \(i(t)\) in a pure resistor of 20 \( \Omega \) is as shown in the figure below, then the power dissipated in the resistor is
waveform i(t) in a pure resistor of 20 Ω
In the following figure, \(C_1\) and \(C_2\) are ideal capacitors. \(C_1\) has been charged to 12V before the ideal switch \(S\) is closed at \(t = 0\). The current \(i(t)\) for all \(t\) is
C1 and C2 are ideal capacitors. C1
Identify the Y equivalent of a network of the circuit shown in Figure below.

A digital filter with impulse response $ h[n] = 2^n u[n] $ will have a transfer function with a region of convergence.

The number of multipliers and delay elements required in the direct form II realization of $$ H(z) = \frac{1 + 0.5z^{-1} - 2z^{-2}}{1 + z^{-1} - 2z^{-2}} $$ 

Choose the minimum number of op-amps required to implement the given expression. $ V_o = \left[ 1 + \frac{R_2}{R_1} \right] V_1 - \frac{R_2}{R_1} V_2 $

Which of the following causal analog transfer functions is used to design causal IIR digital filter with transfer function? $$ H(z) = \frac{0.05z}{z-e^{-0.42}} + \frac{0.05z}{z-e^{-0.2}} $$ Assume impulse invariance transformation with \( T = 0.1 \, \text{s} \). 

Let an error control system uses (16, 3) block codes. The coding efficiency of the system will be
Which of these error-detecting codes enables to find double errors in Digital Electronic devices?
In order to check the CLR function of a counter
Find the differential mode gain of differential amplifier with CMRR of 5200 and common mode gain of 0.015V/V
Why the feedback circuit is said to be negative for voltage series feedback amplifier?

Which type of filter is shown in the figure? 

The output voltage of phase detector is
Which characteristic of PLL is defined as the range of frequencies over which PLL can acquire lock with the input signal?
_______ capacitance affects high frequency response of CE amplifier.
High frequency response of CS amplifier has a Miller multiplier equal to

Amplifier configuration shown in the below Figure is with MOSFETS M1, M2 connected respectively in a configuration given by 

A direct sequence spread spectrum technique uses 10 flip-flop linear feedback shift register as PN code generator. The jamming margin produced by the system will be

Consider the circuit shown in the below Figure and its load line characteristic. The x-intercept of the load line is 

Parameters of the transistor shown in the circuit below are $\beta=100$, $I_{Cq} = 1$ mA. 
Input resistance $R_i$ of the circuit is: