WBBSE Madhyamik Power (Vocational) study plan
WBBSE Madhyamik Power (Vocational) · Give each week a clear focus.
8 weeks · About 6 hours per week
Electrical Circuits, Wiring and Installation & Fundamentals of Power and Electrical Safety
State Ohm's law, series and parallel resistance rules, and compute branch current, voltage drop and total resistance for at least ten mixed circuits by hand
Identify the parts of a domestic single-phase installation (service entry, main switch, MCB, distribution board, earthing conductor) and explain the purpose of each in writing
Demonstrate safe isolation procedure: prove dead with a tester, lock off, and state the correct sequence for earthing before touching conductors
Draw from memory the wiring layout of a one-lamp-one-switch circuit and a two-way stair-light circuit, labelling live, neutral and earth conductors
Your checkpoint
A handwritten workbook of 10 solved circuit problems plus 3 labelled wiring diagrams, self-checked against a printed answer key (target 8/10 correct)
Electrical Circuits, Wiring and Installation & Fundamentals of Power and Electrical Safety
Calculate cable current-carrying capacity, voltage drop and protective device rating for three given load scenarios and select a suitable conductor size
Explain the difference between earthing and neutral, and describe why a fuse or MCB must not be bypassed, using one worked fault example
Solve five numerical problems on power, energy and cost of electricity consumption in kWh
List the first-aid steps for electric shock and the correct use of a fire extinguisher class on an electrical fire
Your checkpoint
A one-page load schedule for a small two-room installation showing circuit number, load in watts, cable size, breaker rating and calculated voltage drop
Electrical Machines and Transformers
Describe the construction and working principle of a DC motor and a single-phase induction motor, and state where each is used in a workshop
Draw and label the parts of a transformer (core, windings, insulation, cooling) and explain how turns ratio relates to voltage and current
Solve six numerical problems on transformer turns ratio, efficiency and losses
Compare star and delta connection of a three-phase motor in terms of phase and line voltage and current
State the routine checks and likely causes of overheating, vibration and bearing noise in a motor
Your checkpoint
A solved problem set of 6 transformer and motor numericals with a labelled diagram of a transformer and a table of 5 motor faults with their causes
Power Generation, Transmission and Distribution
Trace the path of electricity from a generating station through transmission and distribution to a domestic consumer and label each voltage stage
Explain why high voltage is used for transmission and calculate line losses for two given transmission voltages at the same power
Distinguish between a feeder, a distributor and a service main, and between radial and ring distribution systems
Describe the function of a substation, a distribution transformer and a circuit breaker in the network
Your checkpoint
A single-page hand-drawn single-line diagram of generation-to-consumer supply with voltage levels, plus a 200-word written explanation of transmission losses
Power Electronics and Control
Identify the symbols and terminal behaviour of a diode, thyristor, TRIAC, BJT and MOSFET, and state one power application of each
Explain half-wave and full-wave rectification and sketch the input and output waveforms for each
Describe how a TRIAC dimmer or a PWM-controlled DC drive regulates power to a load
Solve four problems on rectifier average output voltage and on a simple transistor switch
Your checkpoint
A waveform sheet showing input and output sketches for half-wave, full-wave and bridge rectifiers with calculated average voltages for a stated AC input
Renewable Energy and Energy Conservation & Workshop Practice, Tools and Measurement
Compare solar photovoltaic, wind and small hydro sources on availability, cost and suitability for West Bengal conditions, in a written table
Calculate the daily energy output of a given solar panel array using panel rating, peak sun hours and a derating factor
List five practical energy-conservation measures in a home or workshop and estimate the monthly saving in units for each
Demonstrate correct use of a multimeter to measure voltage, current and resistance, and of a clamp meter and megger, and state the safety precaution for each
Identify the common hand tools and their correct use in electrical workshop practice, including wire stripper, crimping tool and soldering iron
Your checkpoint
A practical record sheet of 5 multimeter, clamp meter and megger readings taken on a real circuit, with the expected value and the measured value side by side, plus a 10-row energy-saving table with savings estimates
Project Work, Entrepreneurship and Employability Skills & Fundamentals of Power and Electrical Safety
Draft a simple project proposal for a small electrical or solar installation, stating objective, components, estimated cost and safety plan
Prepare a short employability profile listing the electrical skills acquired, a sample job application letter and answers to three common interview questions
Explain the basic requirements for a small electrical service enterprise, including licensing, insurance and record keeping
Revise safety rules and first aid from week 1 and answer 20 mixed safety questions without notes
Your checkpoint
A 2-page project proposal with a component and cost list, plus a one-page CV and covering letter for an electrical technician post
Fundamentals of Power and Electrical Safety & Electrical Circuits, Wiring and Installation & Power Generation, Transmission and Distribution & Electrical Machines and Transformers & Power Electronics and Control & Renewable Energy and Energy Conservation & Workshop Practice, Tools and Measurement & Project Work, Entrepreneurship and Employability Skills
Attempt two full-length mock papers under timed conditions and score each against the marking scheme
Re-solve every question missed in the mocks and write the correct reasoning in one line each
Recite from memory the key formulas for circuits, transformers, rectifiers and energy cost, and check them against the formula sheet
Review the week 1-7 deliverables and close any gap flagged in the self-check lists
Your checkpoint
Two completed timed mock papers with scores recorded and a one-page error log of every mistake with its corrected reasoning
Milestones
Week 2: Can solve a mixed series-parallel circuit and select a breaker and cable size for a stated load without referring to notes, scoring at least 8/10 on a self-made quiz
Week 4: Can draw the generation-to-consumer single-line diagram from memory with correct voltage stages and explain transmission losses numerically
Week 6: Can take voltage, current and insulation resistance readings correctly with a multimeter, clamp meter and megger, and justify each energy-saving measure with a calculated saving
Week 8: Scores at least 60 percent on both timed mock papers and has a written error log with no repeated mistake category