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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.
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.
- Complete the following diagram of a transformer and name the parts labelled A and B.
- Name the part you have drawn to complete the diagram in part (a).
- What is the material of this part named above?
- Is this transformer a step up or step down? Give reason.
In a step-up transformer, the number of turns in the primary are ______ than the number of turns in the secondary.
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.
Define step up and step down transformer.
The transformation ratio in the step-up transformer is ______
A transformer is used to change a high alternating e.m.f. to a low alternating e.m.f. of the same frequency.
State whether the turns ratio of the above transformer is = 1 or > 1 or < 1.
Name the device used to transform 12 V a.c. to 200 V a.c.
Name the coil of which the wire is thicker in a step down transformer. Give reason to your answer.
