Advertisements
Advertisements
प्रश्न
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?
उत्तर
- A soft iron core is used. The core is made up from the thin laminated sheets of soft iron of T and U shape, placed alternately one above the other and insulated from each other by paint or varnish coating over them.
- It is a step-down transformer.
APPEARS IN
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.
- 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 ______.
Name the transformer used in the power generating station and state the function of the 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.
State whether the turns ratio of the above transformer is = 1 or > 1 or < 1.
Name the coil of which the wire is thicker in a step down transformer. Give reason to your answer.
The output current of a transformer in which the voltage is stepped down is usually higher than the input current. Explain why.
