Advertisements
Advertisements
Question
Differentiate step up and step down transformer.
Advertisements
Solution
| Sr. No. | Step up transformer | Step down transformer |
| 1. | The transformer used to change a low alternative voltage to a high alternating voltage is called a step up transformer, i.e. (Vs>Vp). | The transformer used to change a high alternating voltage to a low alternating voltage is called a step down transformer (Vs <Vp). |
| 2. | In a step up transformer, the number of turns in the secondary coil is more than the number of turns in the primary coil (Ns > Np) | In a step down transformer, the number of turns in the secondary coils are less than the number of turns in the primary coil (Ns < Np) |
APPEARS IN
RELATED QUESTIONS
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, the number of turns in the primary are ______ than the number of turns in the secondary.
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.
Explain two types of transformer.
The transformation ratio in the step-up transformer is ______
Below is the diagram of a transformer:
- Identify the type of transformer.
- In this type of transformer which of the wire is thicker, the primary or the secondary? Give a reason.
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.
