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Questions and Answers
What changes may occur in voltage and current when electrical energy is transferred by a transformer?
What changes may occur in voltage and current when electrical energy is transferred by a transformer?
The electrical energy is always transferred without a change in frequency, but may involve changes in amplitudes of voltage and current.
What is the basic function of a transformer?
What is the basic function of a transformer?
A transformer is a device that transfers electrical energy from one circuit to another by electromagnetic induction.
What type of core material is used for transformers operating at low frequencies such as 50 and 60 Hz?
What type of core material is used for transformers operating at low frequencies such as 50 and 60 Hz?
Transformers used at low frequencies, such as 50 and 60 Hz, require a core of low-reluctance magnetic material, usually iron.
What are the typical schematic symbols for transformers?
What are the typical schematic symbols for transformers?
What are the primary components of a transformer?
What are the primary components of a transformer?
Flashcards
What does a transformer do?
What does a transformer do?
A transformer changes the voltage and current levels in an electrical circuit.
How does a transformer work?
How does a transformer work?
A transformer uses electromagnetic induction to transfer energy between two circuits.
What are the main parts of a transformer?
What are the main parts of a transformer?
A transformer is made up of primary and secondary coils wrapped around a core material, usually iron.
Why are iron cores used in transformers?
Why are iron cores used in transformers?
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What happens to the frequency of electrical energy in a transformer?
What happens to the frequency of electrical energy in a transformer?
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Study Notes
Transformer Basics
- When electrical energy is transferred by a transformer, the voltage and current may increase or decrease, depending on the transformer's design and application.
Function and Components
- The basic function of a transformer is to transfer electrical energy from one circuit to another through electromagnetic induction.
- The primary components of a transformer include the primary coil, secondary coil, and core material.
Core Material
- For transformers operating at low frequencies such as 50 and 60 Hz, the typical core material used is iron or iron alloys.
Schematic Symbols
- The typical schematic symbols for transformers are two parallel lines with two coils on either side, representing the primary and secondary coils.
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