Flashcards on Transformer
Transformer Explained: How Electrical Transformers Work
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Transformers
55 cards
Card 1
Question: What is an electrical transformer?
Answer: An electrical transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic inductio
Card 2
Question: What is the primary function of a transformer?
Answer: The primary function of a transformer is to change the voltage and current levels of an alternating current (AC) supply without altering its frequency
Card 3
Question: Why are transformers indispensable in modern electrical power systems?
Answer: Transformers are indispensable because they enable efficient transmission of electricity over long distances and adapt voltage levels for various appl
Card 4
Question: On what basic principle does the operation of a transformer rely?
Answer: The operation of a transformer relies fundamentally on the principle of electromagnetic induction, specifically mutual induction.
Card 5
Question: Who discovered the phenomenon of electromagnetic induction?
Answer: Michael Faraday discovered the phenomenon of electromagnetic induction in the 19th century.
Card 6
Question: What does Faraday's Law of Induction state?
Answer: Faraday's Law of Induction states that a changing magnetic field through a coil of wire induces an electromotive force (EMF), or voltage, across the e
Card 7
Question: Why do transformers operate exclusively with alternating current (AC) and not direct current (DC)?
Answer: Transformers operate exclusively with AC because the magnetic field must be continuously changing to induce a continuous EMF in the secondary coil. DC
Card 8
Question: What are the two main components of a typical transformer?
Answer: A transformer typically consists of two coils of wire, called windings, wound around a common soft iron core.
Card 9
Question: What is the primary winding of a transformer?
Answer: The primary winding (or primary coil) is the coil connected to the AC power source.
Card 10
Question: What is the secondary winding of a transformer?
Answer: The secondary winding (or secondary coil) is the coil connected to the load (the device or circuit receiving power).