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प्रश्न
Name the principal on which step up transformer works.
उत्तर
It works on the principle of electromagnetic induction.
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संबंधित प्रश्न
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.
- 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 ______.
Differentiate step up and step down transformer.
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.
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.
