Q1. Using the mesh analysis find the I_{0} in the circuit give below.

Q2. In the figure below, find the current flowing through R_{1} using Thevenin’s Theorem.

Q3. What do you understand by source? Discuss the different types of dependent and independent voltages and current sources with suitable sketch.

Q4. A coil having a resistance of 10 ohms and an inductance of 0.2H is connected in series with a 100 x 10^{-6} F capacitor across a 230V, 50HZ supply,

Calculate:

i) The active and reactive components of the current

ii) The voltage accross the coil, Draw the phasor diagram.

Q5. A balanced start connected load of 8+6j ohm is connected across three phase, 50Hz, 440V supply system. Calculate

i) Line current

ii) Power absorbed

iii) Reactive volt ampere

Q6. Open circuit and short circuit test on a single phase transfermer gave the following results

V_{0} = 200V, I_{0} = 0.7A, W_{0} = 20 Watt test from primary side, V_{s} = 10V, I_{s} = 10A, W_{s} = 40 Watt test from secondary side.

Determine the equivalent cuircuit parameters referred to primary side.

Q7. Explain the construction and working principle of three phase induction motor with suitable diagram.

Q8. A three phase, 6 pole, 50 Hz induction motor has a slip of 1% at no load and 3% at full load, Find

i) Synchronous Speed

ii) No Load Speed

iii) Full Load Speed

iv) Frequency of rotor curret at full load.

Q9. Draw and explain the V-I characterstics of a PN junction.

Q10. Draw the circuit and explain the characterstics of CB configuration.

Q11. Write a short note on:

i) RS Flip Flop

ii) Star Delta Transformation

iii) De Morgan’s Theorem

iv) Torque-Slip Characterstics