WBBSE Madhyamik Power (Vocational) study guide
WBBSE Madhyamik Power (Vocational) · Work through your exam, one topic at a time.
The WBBSE Madhyamik Power (Vocational) subject is a vocational elective offered under the West Bengal Board of Secondary Education's Madhyamik (Class 10) framework. It suits students who want a practical, trade-oriented subject alongside general academics - particularly those considering ITI, polytechnic diploma, or apprenticeship routes into electrical work, line maintenance, or the power sector. The WBBSE Madhyamik Power (Vocational) study guide has 11 sections and about 3,279 words.
01Fundamentals of Power and Electrical Safety
The examiner checks whether you can compute electrical power and energy, tell AC quantities from DC ones, and apply the safety rules that protect a worker and a consumer. Expect short definitions, one small numerical, and a 'what would you do' situation.
350 words, about 2 min02Electrical Circuits
This domain tests your grip on series and parallel networks, Kirchhoff's laws, power distribution in a circuit, and basic AC terms such as RMS value, frequency and power factor. Series: same current through every element; voltages add; R = R1 + R2 + R3.
296 words, about 1 min03Wiring and Installation
Questions cover Indian wiring colours, IS 732 practice, choice of conductor and protective device, earthing, and the tests done before a domestic installation is energised. Current IS 732 colours: brown = phase, light blue = neutral, green with yellow stripe = earth.
310 words, about 2 min04Power Generation, Transmission and Distribution
You must know how a thermal, hydro or nuclear station drives a three-phase alternator, why transmission uses high voltage, the standard Indian voltage levels, and the layout from grid to consumer. Generation is three phase at 11–25 kV, stepped up for transmission and stepped down for distribution.
296 words, about 1 min05Electrical Machines and Transformers
The paper checks the working principle of DC machines, three-phase induction motors and transformers, plus simple calculations on turns ratio, slip and efficiency. A transformer works on mutual induction and only with AC.
275 words, about 1 min06Power Electronics and Control
This domain tests semiconductor devices (diode, SCR, TRIAC), rectifier and inverter action, choppers, PWM, and simple control circuits such as relays and sensors. A diode conducts in one direction only; a half-wave rectifier gives average output Vm/π and a full-wave rectifier gives 2Vm/π.
307 words, about 2 min07Renewable Energy and Energy Conservation
You must estimate solar PV output, connect panels correctly, size a battery, and apply conservation measures such as LEDs, star-rated appliances and energy audits with payback calculations. A PV panel is rated in watts peak (Wp).
303 words, about 2 min08Workshop Practice
Practical-skill questions on hand tools, drilling, filing, soldering, wire preparation, crimping and workshop safety, including the correct sequence of operations. A file must have a handle fitted; file pressure is applied on the forward stroke only, and the file is lifted on the return.
303 words, about 2 min09Tools and Measurement
Selection and correct use of the multimeter, clamp meter, megger, earth tester and energy meter, plus reading vernier and micrometer scales without error. A voltmeter is connected in parallel, an ammeter in series.
278 words, about 1 min10Project Work
How you choose, build, test, document and defend a small vocational project - aim, circuit diagram, component list, working, cost, safety and report. A project starts with a clear aim and a measurable outcome, for example 'to switch a street lamp on at dusk and off at dawn using an LDR'.
281 words, about 1 min11Entrepreneurship and Employability Skills
Basic business numeracy for an electrical service or trading unit, statutory registrations, and the workplace skills expected of a technician - communication, resume, interview and customer handling. Profit = total revenue − total cost.
280 words, about 1 min