"Transmission of Electric Energy" Where does electric energy come from PPT courseware 2

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"Transmission of Electric Energy" Where does electric energy come from PPT courseware 2

my country's alternating current

The alternating current used for production and daily life in my country has a cycle of 0.02s and a frequency of 50Hz, that is, there are 50 cycles in 1 second, and the direction of the alternating current changes twice per cycle.

For an alternating current with a frequency of 50Hz, the direction of the current changes 100 times in 1 second.

Practical alternator

The actual alternator has a relatively complex structure, but it is mainly composed of two parts: a rotor (rotating part) and a stator (fixed part). The rotor is driven by a water turbine, steam turbine or internal combustion engine.

Large generators emit very high voltages and strong currents, and generate electricity by keeping the coils stationary and the magnetic poles rotating. This type of generator is called a rotating magnetic pole generator.

1. To prevent personal injury caused by high-voltage electric shock:

Must stay away from high voltage charged objects.

2. If a high-voltage transmission line is found to reach the ground:

Do not approach, set up warning signs immediately, and notify the relevant power department to carry out emergency repairs.

Homework assignment:

1. Ask students to read and understand transformers

2. Principle of transformer:

Note: The transformer can change the voltage only for alternating current. Transformers cannot change the voltage of DC

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For more information about the PPT courseware "Where Does Electric Energy Come From? Transmission of Electric Energy", please click the Where Does Electric Energy Come From PPT Transmission of Electric Energy PPT tab.

"Transmission of Electric Energy" Where does electric energy come from PPT courseware 3:

"Transmission of Electric Energy" Where does electric energy come from PPT courseware 3 Transmission of electric energy In order to make reasonable use of energy, power stations must be built close to these energy sources. However, there are many places where electricity is used. For example: Some places are far away from power stations, so it is necessary to Transmitting electrical energy to distant places involves...

"Transmission of Electric Energy" Where does electric energy come from PPT courseware:

"Transmission of Electric Energy" Where does electric energy come from PPT courseware 1. Transmission of electric energy 1. Transmission method: __________ can be used to __________. 2. Transmission process: power plant __________ high-voltage line __________ power for factories or residents. 3. The working principle of transformer..

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Update Time: 2024-09-11

This template belongs to Physics courseware Shanghai Science Edition Ninth Grade Physics industry PPT template

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