Elements of Electrical Engineering-I

Syllabus

Unit_1: Circuit Concepts and Network Theorems

1.1. Concept of network,

1.2. Linear and nonlinear networks,

1.3. Active and passive elements,

1.4. Unilateral and bilateral elements,

1.5. passive elements (R, L, and C) as linear elements,

1.6. Voltage and current sources,

1.7. source transformation,

1.8. Steady state analysis of D.C. circuits with independent and dependent sources,

1.9. Kirchhoff’s Laws, Mesh Analysis and nodal analysis,

1.10. Current and voltage divider rules,

1.11. star delta transformation,

1.12. Network Theorems:

1.13. Superposition theorem,

1.14. Thevenin’s theorem,

1.15. Norton’s theorem,

1.16. maximum power transfer theorem.

Unit_2: Single phase A.C. circuits

2.1. Common signals and their waveforms,

2.2. Instantaneous, peak, average, and RMS values,

2.3. Peak factor and form factor of sinusoidal wave,

2.4. Phase difference, lagging, leading and in phase quantities and phasor representation (Rectangular and polar) of phasors,

2.5. Study of A.C circuits of pure resistance, inductance and capacitance and corresponding voltage-current phasor diagrams,

2.6. Impedance and Admittance,

2.7. Power, Power factor, and Power Triangle,

2.8. Series and parallel resonance,

2.9. Practice of network theorems for A.C. circuits.

Unit_3: Three phase A.C. circuits

3.1. Three-phase system: Its necessity and advantages,

3.2. Meaning of phase sequence,

3.3. Star and delta connections,

3.4 Balanced supply and balanced load,
3.5. Line and phase voltage/current relations,
3.6. Power relations
3.7. Analysis of balanced and unbalanced 3-phase circuits,
3.8 Three phase power measurements.

Unit_4: Electromagnetism

4.1. Ampere’s law,
4.2. Magnetic field intensity,
4.3. Magnetic flux and flux density,
4.4. MMF,
4.5. Magnetic circuit,
4.6. Permeability,
4.7. Reluctance and Permeance,
4.8. Leakage and fringing; concepts of magnetic circuit,
4.9. Analogy between electric and magnetic circuit,
4.10. magnetic circuits with DC and AC excitation,
4.11 Magnetic leakage,
4.12. BH curve,
4.13. Hysteresis and eddy current losses,
4.14. Series & Parallel magnetic circuits, concepts of self-inductance,
4.15. Mutual-inductance and coefficient of coupling,
4.16. DOT convention.

Unit_5: Instruments and Measurements