Basic Electrical Engineering
Course Objectives: To provide the fundamental concept of DC, AC & 3phase electrical circuits.
 General Electric System(6 hours)
 Constituent parts of an electrical system (source, load, communication & control)
 Current flow in a circuit
 Electromotive force and potential difference
 Electrical units
 Ohm’s law
 Resistors, resistivity
 Temperature rise & temperature coefficient of resistance
 Voltage & current sources
 DC circuits(4 hours)
 Series circuits
 Parallel networks
 Krichhhof’s laws
 Power and energy
 Network Theorems(12 hours)
 Application of Krichhof’s laws in network solution
 Nodal Analysis
 Mesh analysis
 Stardelta & deltastar transformation
 Superposition theorem
 Thevnin’s theorem
 Nortan’s theorem
 Maximum power transfer theorem
 Reciprocity theorem
 Inductance & Capacitance in ElectricCcircuits(4 hours)
 General concept of capacitance
 Charge & voltage
 Capacitors in series and parallel
 General concept of inductance
 Inductive & noninductive circuits
 Inductance in series & parallel
 Alternating Quantities(2 hours)
 AC systems
 Wave form, terms & definitions
 Average and RMS values of current & voltage
 Phasor representation
 Singlephase AC Circuits(6 hours)
 AC in resistive circuits
 Current & voltage in an inductive circuits
 Current and voltage in an capacitive circuits
 Concept of complex impedance and admittance
 AC series and parallel circuit
 RL, RC and RLC circuit analysis & phasor representation
 Power in AC Circuits(4 hours)
 Power in resistive circuits
 Power in inductive and capacitive circuits
 Power in circuit with resistance and reactance
 Active and reactive power
 Power factor, its practical importance
 Improvement of power factor
 Measurement of power in a singlephase AC circuits
 ThreePhase Circuit Analysis(6 hours)
 Basic concept & advantage of Threephase circuit
 Phasor representation of star & delta connection
 Phase and line quantities
 Voltage & current computation in 3phase balance & unbalance circuits
 Real and reactive power computation
 Measurements of power & power factor in 3phase system
Practical:
 Measurement of Voltage, current& power in DC circuit : Verification of Ohm’s Law
Temperature effects in Resistance
 Krichoff’s Voltage & current Law : Evaluate power from V & I, Note loading effects of meter
 Measurement amplitude, frequency and time with oscilloscope : Calculate & verify average and RMS value, Examine phase relation in RL & RC circuit
 Measurements of alternating quantities : R, RL,RC circuits with AC excitation, AC power, power factor, VARs, phasor diagrams
 Threephase AC circuits : Measure currents and voltages in threephase balanced AC circuits, Prove Y∆ transformation, Exercise on phasor diagrams for threephase circuits
 Measurement of Voltage, current& power in a threephase circuit : Twowattmeter method of power measurement in R, RL and RC three phase circuits, Watts ratio curve
References:
 J.R Cogdell, “ Foundations of Electrical Engineering”, printice Hall, Englewood Chiffs, New Jersy, 1990.
 I.M Smith,” Haughes Electrical Technology”, AddisonWesley, ISR Rprint,2000
Evaluation Scheme:
The questions will cover all the chapters in the syllabus. The evaluation scheme will be as indicated in the table below:
Chapter 
Hours 
Marks Distribution* 
1 
6 
10 
2 
4 
5 
3 
12 
25 
4 
4 
5 
5 
2 
15 
6 
6 
7 
4 
10 
8 
6 
10 
Total 
80 
*Note: There may be minor deviation in marks distribution.
