To calculate Thevenin's equivalent in the following

all independel1t voltage sources are opened and all indepeIldent current sources are short circuited.

both voltage and current sources are open cirCuited.

all Voltage and current sources are shorted.

all voltage sources are-shorted while current sources are opened.

The characteristic impedance of a low pass filter in attenuation band is

purely imaginary

zero

complex quantity

real value

Laplace transform function is of a unit impulse

s

0



1

A network function is said to have simple pole or simple zero if

the poles and zeros are on the real axis.

the poles and zeros are repetitive.

the poles and zeros are complex conjugates to each other.

the poles and zeros are not repeated.

Step response of Series RC circuit with applied voltage V is of the form

V/R

V/R





Higher the value of Q of a series circuit

sharper is its resonance

greater is its bandWicith

broader is its resonaIit curve

narrower is its bandwidth

If the given network is symmetrical, then according to the symmetric theorem.

Y21 Y12

Y11 Y22

Y11 -Y22

Y11 Y12

State the initial value theorem in the Laplace transform. What is the value of the function at t if its 4(s

A sinusoidal voltage of rms value 20 V and frequency equal to frequency of resonance is applied -to a Series RLC circuit having resistance R 20 inductance L 0·05 H and capacitance C 0·05 JJ.F: Calculate the value of current and voltages across L and C.

Calculate the driving point admittance of the network shown in Figure 1.

<img src='./qimages/15618-3a.jpg'>

A transform voltage is given by Plot the pole zero plot in the s-plane and obtain the time domain response.

Find Out the ABCD parameters of the network shown in Fig 2.

<img src='./qimages/15618-4a.jpg'>

(b)Explain Z-parameters and also draw an equivalent circuit of the Z-parameter model of the two-port network.

State Thevenin's theorem. using thevenin's theorem, calculate the current in the branch XY, for the circuit given in Figure 3.

<img src='./qimages/15618-5a.jpg'>

Define an ideal voltage source and an ideal
current source.

Derive the expression of resonant frequency for a parallel RLC circuit in terms of L and C.

A coil having a resistance of 20 n and inductiVe reactance of 31·4 ohm at 50 Hz is connected in series with a capacitor of capacitance of 10mF. Calculate

the value of resonance frequency.

the Q factor of the circuit.

Design a symmetrical bridged T:-attenuator to provide attenuation of 60 dB and to work into a line of characteristic impedance 600 ohms.

Design a prototype low. pass filter, assuming cut-off frequency wc.

8. Write short notes on any four of the following:

Advantages of m-derived networks in case of filters

Maximum power transfer theorem

Relation between h-parameter and ABCD parameter

Advantages of using Laplace transform in networks

Characteristics of filters