JNTU B.Tech II Year NETWORK ANALYSIS Previous Question Paper (November/December - 2017 - R16)

Define Graph, Tree, Basic Cut set and Basic Tie set. Illustrate with an example.

Explain Active elements in detail.

Derive the relation between voltage and current in a series connected RL Circuits.

Draw a power triangle in series connected RLC networks.

Derive the relation between RMS and maximum value.

Define form factor and peak factor.

Define characteristic impedance.

Define image and iterative impedance.

Draw and explain T section network.

Explain about LC Filters.

What is an electric circuit? What is a magnetic circuit? Make a comparison between electric circuit and magnetic circuit.

Coil 1 of a pair of coupled coils has a continuous current of 5A, and the corresponding fluxes φ11 and φ12 are 0.2 and 0.4 mWb respectively. If the turns are N1 = 500 and N2 = 1500, find L1, L2, M and k.

For the network shown in Figure 1 find Zab and Io.

Find the input impedance of the circuit shown in Figure 2. Assume that the circuit operates at ω = 50 rad/s.

Obtain the current locus of a fixed resistance and a variable capacitance.

Given a series RLC circuit with R = 10 ohms, L = 1 mH and C = 1 μF is connected across a sinusoidal source of 20 V with variable frequency. Find: i) The resonant frequency ii) Q factor of the circuit at resonant frequency iii) Half power frequencies

Derive and draw the response of a series RLC circuit for step input.

An impedance Z1 = 10 + j10 Ω is connected in parallel with another impedance of resistance 8.5 Ω and a variable capacitance connected in series. Find C such that the circuit is in resonance at 5 KHz.

Calculate the value of C that will produce a quality factor of 50.

Find ω1, ω2, and B.

Determine the average power dissipated at ω = ω0, ω1, ω2. Take Vm = 100 V.

Obtain the current locus of a series circuit having a fixed resistance and a variable inductance.

Given a series RLC circuit with R = 100 ohms, L = 0.5 H and C = 40 μF, Calculate the resonant, lower and upper half – power frequencies.

Characteristic Impedance and

Image Transfer Constant.

Define Hybrid parameters of a Two Port network. Establish the relation between Hybrid Parameters and ABCD Parameters.

A symmetrical T-section has an inductance of 0.47H in each series arm and a 300 μF capacitor in the shunt arm. i) Find the characteristic impedance at frequencies of 50 Hz and 100 Hz. ii) If the T-section is terminated in the characteristic impedance, find the ratio of load current to input current at both the frequencies.

What is a high pass filter? In what respects it is different from a low pass filter?

Derive the equations to find the inductances and capacitances of a constant K high pass filter.

What is an LC immittance function? State the properties of such functions.

Design a constant ‘K’ T-section low pass filter having cutoff frequency of 2 kHz and nominal characteristic impedance of 600 ohms.