Advertisements
Advertisements
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.
Advertisements
उत्तर
A step-down transformer is used in a portable radio in order to reduce the voltage.
APPEARS IN
संबंधित प्रश्न
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.
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.
Give two points of difference between a step-up transformer and step-down transformer.
In a step up transformer ______.
Differentiate step up and step down transformer.
Explain two types of 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 device used to transform 12 V a.c. to 200 V a.c.
