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Questions
Explain with the aid of a simple diagram, the transmission of electric power from the generating station to your house.
Explain with the help of a neat diagram the mode of power transmission from a power house to a distant city.
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Solution
- The 11000 volt, or 11 KV, electric power is produced at the generating station, which is situated far from the areas that would use it. This current (A.C.) measures 50 hertz.
- This alternating current voltage is increased from 11 KV to 132 KV at GRID-SUB-STATION in order to reduce energy loss in the transmission line wires.
- Before being sent to CITY-SUBSTATION, this voltage is reduced from 132 KV to 33 KV at MAIN-SUB-STATION.
- The voltage is further reduced from 33 KV to 220 V at the CITY SUB-STATION before it is supplied to homes.
RELATED QUESTIONS
In the transmission of power the voltage of power generated at the generating stations is stepped up from 11kV to 132 kV before it is transmitted. Why?
At what voltage and frequency is the electric power generated at the power generating station?
At what voltage is the a.c. supplied to our houses?
Name the device used to decrease the voltage at the substation for its supply.
- Name the three connecting wires used in a household circuit.
- Which of the two wires mentioned in part (a) are at the same potential?
- In which of the wire stated in part (a) the switch is connected?
What is the pole fuse? Write down its current rating.
The electrical appliances in a house are connected in ______.
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