"Generator" Electromagnetic Phenomenon PPT Courseware 2

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"Generator" Electromagnetic Phenomenon PPT Courseware 2

dynamo

1. The principle of the generator is: electromagnetic induction phenomenon

2. The essence of a generator is to convert mechanical energy into electrical energy

Basic structure of generator

Generator consists of stator and rotor

1. The current whose direction is constantly changing is called alternating current (AC).

A current that remains in the same direction is called direct current (DC)

2. The AC frequency produced in my country is 50Hz and the period is 0.02S.

3. Generators can be divided into AC generators and DC generators.

Note: Regardless of the type of generator coil, AC current is generated

Class summary

1. ____ country______ discovered electromagnetism in ____. This phenomenon is also ________

____ country______ discovered magnetism generating electricity in ____ year, we call it __________ phenomenon

2. Generator: ※ Principle: Electromagnetic induction phenomenon

Essence: A device that converts mechanical energy into electrical energy

3. The current whose direction is constantly changing is called alternating current (AC).

A current that remains in the same direction is called direct current (DC)

High School Entrance Examination Link

(2012•Zibo) Which of the following statements about electromagnetic phenomena is correct ( )

A. Generators are based on the phenomenon of electromagnetic induction

B． The magnetic strength of an electromagnet depends only on the number of turns in the coil.

C. Speakers and microphones are devices that convert acoustic signals into electrical signals

D． The direction of the induced current is only related to the direction in which the conductor cuts the magnetic field lines.

Which of the following statements about electricity and magnetism is correct ( )

A. Alternators are made using the phenomenon of electromagnetic induction, which states that a magnetic field can produce an electric current.

B． An electric motor is made based on the principle that an energized coil is forced to rotate in a magnetic field. It is a device that converts mechanical energy into electrical energy.

C. The electromagnetic concentrator uses electromagnets to select ores

D． When the compass pointing changes, it must be affected by the permanent magnet.

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For more information about the "Electromagnetic Phenomena Generator" PPT courseware, please click the "Electromagnetic Phenomenon ppt Generator ppt" tab.

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Update Time: 2024-09-09

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