Advertisements
Advertisements
Question
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.
Advertisements
Solution
A step-down transformer is used in a portable radio in order to reduce the voltage.
APPEARS IN
RELATED QUESTIONS
Draw a labelled diagram to show the various components of a step-up transformer.
Name the principal on which step up transformer works.
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.
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?
In a step up transformer ______.
The transformation ratio in the step-up transformer is ______
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.
Name the coil of which the wire is thicker in a step down transformer. Give reason to your answer.
