1. Select the most appropriate alternative. A network is said to be non-linear if it does not satisfy Superposition condition

(ii) Homogeneity condition

(iii) Associative condition

(iv) Both Superposition and Homogeneity conditions The superposition theorem is applicable to Current only

(ii) Voltage only

(iii) Both voltage and current

(iv) Voltage, current and power When a source is delivering maximum power to load, the efficiency of a circuit is always 50%

(ii) depends upon circuit parameters

(iii) is always 75%

(iv) None of these In RLC circuit, the current at Resonance is maximum in series circuit and minimum in parallel circuit

(ii) maximum in parallel circuit and minimum in series circuit

(iii) maximum in both the circuits

(iv) minimum in both the circuits To neglect a voltage source, the terminals across the source are short-circuited

(ii) open-circuited

(iii) replaced by a capacitor

(iv) None of these Power factor of a pure capacitor is unity

(ii) zero

(iii) 0.707 leading

(iv) 0.707 lagging According to the statement of KCL, at any node Outgoing currents incoming currents ate greater than
outgoing currents incoming currents are less than

(iii) outgoing currents incoming currents are equal to
None of these

2.(a) Using the star-delta transformation technique, find the equivalent resistance of the. circuit shown in Figure 1 at the terminals A and B. <img src='./qimages/8795-2a.jpg'> In a series RLC circuit, if the magnitude of voltage across the inductance is 362 volts at resonance what is the power factor and voltage across the capacitor at resonance?

3.(a) What do you understand by quality factor of a circuit? Establish the relation between bandwidth, quality factor and resonant frequency of a resonant circuit.
For the circuit shown in Figure determine the active power and apparent power.

<br><br> <img src='./qimages/8795-3b.jpg'>

4.(a) Determine the Thevenin equivalent of the circuit across AB terminals as shown in Figure 3. <img src='./qimages/8795-4a.jpg'> Draw the Norton's equivalent circuit for the given network as shown in Figure 4 at A and B. <img src='./qimages/8795-4b.jpg'> Draw the phasor diagrams for RL circuit,and(ii)RC circuit:
Find the heat dissipated by a 30 ohm resistor, if it carries a current of i 10 sin 314 t.

6.(a) State, prove and explain maximum power transfer theorem.
Differentiate between series and parallel resonance.

7. Write short notes on any two of the following: Duality and Dual Networks Types of Dependent Sources Half-power Frequencies and Bandwidth of Resonant Circuits