Maharashtra HSC Electrical Technology (Vocational) study materials
Maharashtra HSC Electrical Technology (Vocational) study resources

Maharashtra HSC Electrical Technology (Vocational) study plan

Maharashtra HSC Electrical Technology (Vocational) · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Basic Electrical Concepts and Fundamentals & Electrical Machines and Transformers

  • Derive and apply Ohm's law, series/parallel equivalent resistance, and power formulas to at least 20 numeric problems without reference notes

  • Explain the difference between AC and DC quantities, define RMS, average, peak and form factor, and compute each from a given waveform description

  • Draw and label the constructional parts of a single-phase transformer and state the function of core, windings, insulation and conservator

  • Calculate turns ratio, secondary voltage, and full-load currents for a single-phase transformer given kVA rating and voltages

  • Solve transformer efficiency and regulation problems at unity and 0.8 lagging power factor

Your checkpoint

A handwritten formula sheet plus 25 solved numericals covering Domain 1 and transformer basics, self-marked against a worked-answer key

Week 2

Electrical Machines and Transformers

  • Explain the production of a rotating magnetic field from a three-phase supply and relate synchronous speed to supply frequency and pole count

  • Compare squirrel-cage and slip-ring induction motors on construction, starting torque, and application

  • Compute slip, rotor frequency, and starting current ratio for a given induction motor nameplate data set

  • Describe the working principle, EMF equation and voltage regulation check of a DC generator

  • List the losses in a DC machine and classify them as constant, variable, or stray

Your checkpoint

A one-page comparison table of DC shunt, DC series, three-phase induction and single-phase induction motors with application examples, plus 15 solved machine numericals

Week 3

Electrical Materials and Wiring & Power Systems and Distribution

  • Classify conducting, insulating, and magnetic materials by property and name one practical use for each in wiring or machine construction

  • Select correct conductor size and insulation type for given load current, run length, and installation environment

  • Describe the layout of a low-voltage distribution system from transformer to consumer premises, naming each stage

  • Distinguish HT and LT supply, state typical voltage levels, and explain the role of a distribution substation

  • Explain why power factor matters to a distribution utility and list three methods of power factor improvement

Your checkpoint

A labelled single-line sketch from 11 kV feeder to a domestic consumer with conductor sizes, protection devices, and voltage levels annotated

Week 4

Electrical Measurements and Instruments & Power Systems and Distribution

  • Describe the construction and working of a moving-coil and a moving-iron instrument and state which is used for AC and why

  • Extend the range of a voltmeter and an ammeter using series and shunt resistors and compute the required values

  • Explain the working of a dynamometer-type wattmeter and an induction energy meter, including the role of the braking magnet

  • Compute energy consumption in kWh and estimate a monthly bill from a meter reading for a mixed load

  • Interpret CT and PT ratios and compute primary current from a secondary reading

Your checkpoint

A closed-book 20-question self-test on instruments and metering, scored and error-logged with corrections written out

Week 5

Electrical Installation and Maintenance & Electrical Safety, Codes and Standards

  • Plan a domestic wiring installation: count points, select circuit divisions, and choose MCB ratings for lighting and power circuits

  • Describe earthing systems (pipe, plate, and modern chemical earthing) and state the resistance value normally aimed for

  • Apply the principle of protection against electric shock: explain role of ELCB/RCCB, fuses, and MCB discrimination

  • State Indian Electricity Rules and IS code requirements for conductor colour code, minimum heights, and earth continuity

  • Outline a preventive maintenance schedule for a motor and a distribution board with the checks to be performed

Your checkpoint

A two-page installation and safety checklist for a two-room domestic wiring job, citing the specific rule or code clause for each check

Week 6

Electrical Drawing and Estimation & Practical Skills and Workshop Practice

  • Read and interpret standard electrical symbols on a wiring diagram and convert a schematic into a wiring layout

  • Prepare a material estimate (quantity and cost) for a given lighting and power circuit from a simple drawing

  • Describe safe workshop practice for handling tools, ladders, and live-line work, including lockout and tagout steps

  • Explain the procedure for testing insulation resistance and earth continuity with a megger and record results in a test format

  • Demonstrate correct jointing and termination practice for stranded and solid conductors in written procedure form

Your checkpoint

A complete estimate sheet with quantities, unit rates, and total cost for a 10-point installation, plus a filled sample insulation-resistance test record

Week 7

Basic Electronics and Control

  • Explain the operation of a PN junction diode in forward and reverse bias and sketch the V-I characteristic

  • Describe half-wave and full-wave rectifier circuits and compare ripple, efficiency, and component count

  • Explain the working of a BJT as a switch and as an amplifier, and identify cutoff, active, and saturation regions

  • Describe the construction and use of an SCR or triac in a simple power control application

  • Identify the function of a relay, contactor, and limit switch in a motor control circuit and draw a simple start-stop ladder

Your checkpoint

A hand-drawn set of four circuit sketches (rectifier, BJT switch, SCR control, DOL starter ladder) each annotated with component function and one operating condition

Week 8

Basic Electrical Concepts and Fundamentals & Electrical Materials and Wiring & Electrical Machines and Transformers & Electrical Measurements and Instruments & Power Systems and Distribution & Electrical Installation and Maintenance & Electrical Safety, Codes and Standards & Electrical Drawing and Estimation & Basic Electronics and Control & Practical Skills and Workshop Practice

  • Revise all ten domains using the error logs from weeks 1 to 7, re-solving every previously wrong numerical

  • Complete two full-length timed mock papers under exam conditions and score them

  • Rewrite condensed notes for the five highest-weight domains into a single revision sheet

  • Identify the three weakest sub-topics from mock results and close each gap with targeted practice

  • Confirm recall of key code values, standard voltages, and safety limits without reference material

Your checkpoint

Two scored mock papers with a written gap-closure report listing each weak sub-topic, the action taken, and the final verified answer

Milestones

Week 2: Can state synchronous speed, slip, and transformer turns ratio correctly for five unseen numericals in under 15 minutes total

Week 4: Scores at least 70% on the closed-book instruments and metering self-test and has corrected every wrong item in writing

Week 6: Produces a costed estimate and a completed test record that another person could execute without asking a question

Week 8: Scores at least 60% on both timed mock papers with no repeated error from weeks 1 to 7