List of top Electronics and Communication Engineering Questions on Electric circuits and fields

In a non-magnetic medium electric field \( E = E_0\cos\omega t \) is applied. If the permittivity of the medium is \( \varepsilon \) and the conductivity is \( \sigma \) then the ratio of the amplitudes of the conduction current density and displacement current density will be:
For electrostatic fields in charge free atmosphere, which one of the following is correct?
Find the value of required resistor across AB of the following circuit to transfer maximum power?
value of required resistor across AB
Driving point impedance of the function \( F(s) = \frac{(s+k_1)(s+k_2)(s+k_3)}{(s+1)(s+2)(s+3)} \) is
When two, two-port networks are connected in series, then
For a series RLC circuit which of the following statement is not correct?
The values of B and D of ABCD parameters of two port network respectively are
values of B and D of ABCD parameters of two port network
The function \( \frac{dq}{dv} \) is called incremental then it is
A coil of resistance \(12 \Omega\) and inductance 18 H is suddenly connected to a dc supply of 30 V. Calculate time constant
The circuit shown in Figure is equivalent to a load of
Figureisequivalenttoaloadof
If three equal resistances of \(12\Omega\) are connected in Delta, then each resistance of the equivalent Star is
Match the following:
convert alternating current
The current through a series RL circuit is \( \frac{1}{4} e^{-\frac{3}{4} t} \) when excited by a unit impulse voltage. The values of R and L are respectively
_______ 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 

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:

For the circuit shown in the Figure below, \(g_m\) of the transistor is