Tamil Nadu HSE First Year Basic Electrical Engineering study plan
Tamil Nadu HSE First Year Basic Electrical Engineering · Give each week a clear focus.
8 weeks · About 7 hours per week
Ohm's Law, Resistance and Resistor Networks & Basic Electrical Quantities and Units
Define and convert the SI electrical quantities (charge, current, potential difference, resistance, conductance, power, energy) using powers of ten without a calculator error
State Ohm's law and apply V = IR to solve at least fifteen numeric problems involving unknown current, voltage and resistance
Distinguish between conductors, semiconductors and insulators using resistivity order-of-magnitude values and temperature behaviour
Compute the resistance of a wire from resistivity, length and cross-sectional area, and explain how length and area affect it
Interpret resistor colour codes (four-band) and the E12 preferred value series to read and select component values
Your checkpoint
A worked problem set of 25 solved numericals on units, conversions and Ohm's law, each with formula, substitution, unit check and final answer
Ohm's Law, Resistance and Resistor Networks & Electrical Power and Energy
Reduce series, parallel and series-parallel resistor networks to a single equivalent resistance and back-calculate branch currents
Apply the current divider and voltage divider rules to at least ten two- and three-resistor networks
Explain the effect of temperature coefficient of resistance on copper and on carbon, and compute resistance change over a temperature rise
Derive and use P = VI, P = I squared R and P = V squared by R to find power dissipated in each branch of a network
Convert electrical energy into commercial units (kWh) and calculate the cost of running a given load for a stated period
Your checkpoint
One-page network analysis sheet: three series-parallel circuits solved fully (equivalent resistance, every branch current, every resistor power, total kWh for 30 days)
Magnetic Effects of Electric Current & Electromagnetic Induction
Describe the magnetic field around a straight conductor, a loop and a solenoid, and state the right-hand grip rule and end rule
Apply the force law F = B I L sin(theta) and the motor effect to compute force on a current-carrying conductor
State and apply Faraday's laws and Lenz's law to predict the direction and magnitude of induced EMF in simple coil problems
Distinguish self-inductance from mutual inductance and compute induced EMF from a given rate of change of current using e = -L di/dt
Explain the working principle of a transformer in terms of mutual induction and solve turns-ratio problems for voltage and current
Your checkpoint
A labelled hand-drawn set of four diagrams (field around straight wire, solenoid with polarity, Fleming's left-hand rule applied to a conductor, transformer with turns ratio worked numerically) plus a 150-word explanation of Lenz's law with one worked example
DC Machines: Generators and Motors
Identify the constructional parts of a DC generator and a DC motor and state the function of each part
Explain the principle of operation of the DC generator and derive the EMF equation E = (phi Z N P)/(60 A) and use it numerically
Classify DC machines by excitation (separate, shunt, series, compound) and sketch their circuit connections
Explain the principle of the DC motor, back EMF and why a starter is needed, and compute back EMF from supply voltage and armature drop
Compare generator and motor action and describe one practical application of each excitation type
Your checkpoint
A two-column comparison chart of DC generator versus DC motor (construction, principle, EMF/back EMF equation, energy conversion direction, applications) plus three EMF-equation numericals solved
AC Fundamentals and Single-Phase Circuits
Define cycle, frequency, time period, amplitude, instantaneous value, average value and RMS value, and compute RMS and average for a sinusoidal wave
Represent an alternating quantity by phasor and write the equation v = Vm sin(omega t + phi) for a given waveform
Distinguish resistance, inductive reactance and capacitive reactance, and compute XL and XC at a stated frequency
Solve series R-L, R-C and R-L-C circuit problems for impedance, current, phase angle and power factor
Compute active, reactive and apparent power and explain the meaning of power factor and its improvement
Your checkpoint
A phasor-diagram portfolio: one R-L, one R-C and one R-L-C series circuit each drawn as a phasor diagram with impedance, current, phase angle, power factor and the three powers calculated
Electrical Wiring, Safety and Measuring Instruments & Practical Skills and Laboratory Applications
Describe the wiring accessories and materials used in domestic installation (switch, socket, ceiling rose, MCB, fuse, earthing conductor) and state where each is used
Explain earthing, its necessity, and the difference between fuse and miniature circuit breaker protection
Compute fuse/MCB rating and cable size selection for a given load current with a stated safety margin
Explain the construction and working of the moving-coil and moving-iron instruments and state which is used for DC and which for AC
Connect and use a voltmeter, ammeter, multimeter and megger correctly, including range selection and polarity, and list the precautions for each
Your checkpoint
A one-page domestic wiring plan for a two-room load list: connected load, diversity-adjusted current, chosen MCB rating, chosen cable size, earthing arrangement, and a table of the five instruments with their correct connection method
Basic Electrical Quantities and Units & Ohm's Law, Resistance and Resistor Networks & Electrical Power and Energy & Magnetic Effects of Electric Current
Re-derive from memory every formula in domains 1 to 4 and check each against a worked example
Solve a timed set of forty mixed numerical questions drawn from quantities, networks, power/energy and magnetic effects
Identify and correct your three most frequent error types from the timed set (unit slip, formula choice, arithmetic)
Re-solve every question answered wrongly in the timed set without looking at the solution first
Your checkpoint
A timed mock paper (40 questions, 60 minutes) scored and marked, plus an error log listing each mistake, its cause and the corrected method
Electromagnetic Induction & DC Machines: Generators and Motors & AC Fundamentals and Single-Phase Circuits & Electrical Wiring, Safety and Measuring Instruments & Practical Skills and Laboratory Applications
State and apply the key laws of induction, DC machine equations, AC impedance relations and instrument principles from memory in a rapid-recall drill
Solve a second timed mock paper covering domains 5 to 9 under exam conditions
Explain in writing the working of a transformer, a DC motor and a moving-coil instrument in three short paragraphs each, using correct technical terms
Review the error logs from weeks 7 and 8 and confirm that no error type recurs
Your checkpoint
A second timed mock paper (40 questions, 60 minutes) scored at or above your week-7 score, with a final one-page formula sheet written entirely from memory
Milestones
Week 2: Solve a ten-question set on series-parallel networks and power/energy with at least 8 correct, showing full working for each
Week 4: Write the DC generator EMF equation from memory and use it correctly in two numericals, and label all parts of a DC machine diagram without notes
Week 6: Produce a domestic wiring plan whose MCB rating and cable size are justified by a shown current calculation, and state the correct connection of voltmeter, ammeter and megger without reference
Week 7: Score at least 60 percent on the first timed 40-question mock and have an error log with a named cause for every wrong answer
Week 8: Score at least 75 percent on the second timed mock and reproduce the complete formula sheet from memory with no missing equation