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प्रश्न
A portable radio has a built in transformer so that it can work from the mains instead of batteries. Is this a step up or step down transformer? Give reason.
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उत्तर
A step-down transformer is used in a portable radio in order to reduce the voltage.
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संबंधित प्रश्न
Draw a labelled diagram to show the various components of a step-up transformer.
Draw a labelled diagram of a step-up transformer and explain how it works.
Draw a labelled diagram of a device you would use to transform 200 V a.c. to 15 V a.c. Name the device and explain how it works. Give its tow uses.
In a step-up transformer, the number of turns in the primary are ______ than the number of turns in the secondary.
In a step up transformer ______.
Differentiate step up and step down transformer.
Define step up and step down transformer.
Below is the diagram of a transformer:
- Identify the type of transformer.
- In this type of transformer which of the wire is thicker, the primary or the secondary? Give a reason.
A transformer is used to change a high alternating e.m.f. to a low alternating e.m.f. of the same frequency.
Identify the type of transformer used for the above purpose.
Name the tranformer used in the power sub-station, state the function of each transfomer.
