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प्रश्न
Give two points of difference between a step-up transformer and step-down transformer.
उत्तर
| Step up transformer | Step down transformer |
| It increases the a.c. voltage and decrease the current. | It decreases the a.c. voltage and increase the current. |
| The wire of primary coil is thicker than that in the secondary coil. | The wire in the secondary coil is thicker than that in the primary coil. |
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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 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.
Name the coil of which the wire is thicker in a step up transformer. Give reason to your answer.
Name the transformer used in the power generating station and state the function of the transformer.
State whether true or false. If false, correct the statement.
In a step down transformer the number of turns in primary coil is greater than that of the number of turns in the secondary coil.
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.
Explain two types of 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.
Name the device used to transform 12 V a.c. to 200 V a.c.
State two characteristics of the primary coil as compared to its secondary coil of a step-up transformer.
