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प्रश्न
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.
पर्याय
True
False
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उत्तर
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- True
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संबंधित प्रश्न
Name the principal on which step up transformer works.
- 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.
The following diagram shows the core of a transformer and its input and output connections.
- State the material used for core and describe its structure.
- Complete the diagram of the transformer and connections by labelling all parts joined by you.
- Name the transformer: step-up or step down?
Give two points of difference between a step-up transformer 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.
Define step up and step down transformer.
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.
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.
The output current of a transformer in which the voltage is stepped down is usually higher than the input current. Explain why.
