9. Make a switch board for one room set consisting of four points –
Bulb, tube-light, ceiling fan and socket on the board.
10. Arrangement of bulbs for a decorative series used in festivals.
11. Making of electrical bell and buzzer.
Class XI
1. Plan a layout of Main-board for domestic
connection diagram, tracing connections.
2. Draw a wiring diagram of a 2 room set consisting of four points –
Bulb, tube light, ceiling fan and three pin plug. Make a switch
board.
3. Fault location and repair of electrical appliances like electric kettle,
room heater, bell, mosquito repellent, aquaguard water purifier,
heat cooler, regulator of fan, electric iron, toaster, hot plate, heat
convector.
4. Study of fluorescent tube light –
a. Working principle, components and circuit diagram.
b. Tracing the circuit.
c. Functions of choke.
5. Series and parallel connection of electrical components.
a. Method of
formulas.
b. Practical – Making series – parallel connection of three
components and verifying properties.
6. Charging and discharging of cells – Batteries of inverters and cars
– their working principle and maintenance.
7. Study of Meggar (Insulation Tester)
a. Principle of working and use.
b. Practical – Earth and leakage test using Meggar.
8. Study of single phase transformer – working principle, types,
material used, construction, testing and specifications.
9. Study of Manual Voltage Stabilizer –
a. Principle of working, circuit diagram.
b. Practical – Tracing the connection, testing and application.
series
and
parallel
116
supply
connection
–
–
Drawing
Properties
and