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An electric transformer is: 

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  1. a magnetic device that consists of only two coils wound on a common core.
  2. an electric device that consists of two or more multiturn coils wound on a common core.
  3. an electric device that consists of only two coils wound on a common core.
  4. a magnetic device that consists of two or more multiturn coils wound on a
    common core.

Answer (Detailed Solution Below)

Option 2 : an electric device that consists of two or more multiturn coils wound on a common core.
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Detailed Solution

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  • An electrical transformer is an electrical device which transfers electrical energy from one circuit to another
  • It works based on the principle of electromagnetic induction
  • It is used to transform the voltage and current levels (either increase or decrease) at a constant frequency
  • It consists of two or more multi-turn coils wound on a common core
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More Transformer Construction Questions

Q1.A transformer is said to be a step-up transformer when ________.
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Q1.What does the flux created by the load current in the primary winding, which links only with the primary winding, represent?
Q2.In distribution transformers, the explosion vent is designed to:
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Q1.If a 6-pole induction motor operates on a 60 Hz supply, its synchronous speed is _____________.
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