When electrical energy is transmitted over long distances, it is unavoidable that there will be losses due to resistance in the lines. Using transformer stations and high-voltage transmission lines can drastically reduce such losses. To model such lines, two wires of 1 m in length and total resistance of 100 ohms are connected to a 6-V/0.5-A light bulb and an AC voltage of 6 V is transmitted along them. Under these circumstances the lamp does not light. However, if two step transformers are set-up as transformer stations to increase the voltage in the simulated transmission lines to 1000 V and then convert it back down to 6 V immediately before the lamp, the lamp will light up with its normal brightness.
| Materiallist (Excerpt) |
Product |
Amount |
|
Multimeter ADM2, demo., analoque
|
13820-00
|
2
|
|
Variable transformer, 25 VAC/ 20 VDC, 12 A
|
13531-93
|
1
|
|
Coil, 12000 turns
|
06517-01
|
2
|
|
Clamping device
|
06506-00
|
2
|
|
Coil, 75 turns
|
06511-01
|
2
|
|
Iron core, U-shaped, laminated
|
06501-00
|
2
|
|
Long distance line - model , 2p.
|
07305-00
|
1
|
|
Insulating support
|
06020-00
|
4
|
|
Iron core, short, laminated
|
06500-00
|
2
|
|
Support base variable
|
02001-00
|
1
|
|
Lamp holder E10, on base plate
|
06170-00
|
1
|
|
Filament lamps 4V/0.04A, E10, 10
|
06154-03
|
1
|
|
Connecting cord, 32 A, 500 mm, black
|
07361-05
|
2
|
|
Connecting cord, 32 A, 250 mm, black
|
07360-05
|
8
|