MEDIUM
10th ICSE
IMPORTANT
Earn 100

Draw a labelled diagram to show the various components of a step-up transformer.

Important Questions on Electro-Magnetism

MEDIUM
10th ICSE
IMPORTANT
Name the device used to transform 12 V a.c to 200 V a.c. Name the principal on which it works.
HARD
10th ICSE
IMPORTANT
Draw a labelled diagram of a step-up transformer and explain how it works. State two characteristics of the primary coil as compared to its secondary coil.
MEDIUM
10th ICSE
IMPORTANT
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 two uses.
MEDIUM
10th ICSE
IMPORTANT

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. What is the material of this part? Is this transformer a step-up or step down? Give reason.

Question Image

MEDIUM
10th ICSE
IMPORTANT
The diagram below shows the core of a transformer and its input and output connections.
Question Image
(a) State the material used for core and describe its structure.
(b) Complete the diagram of the transformer and connections by labelling all parts joined by you.
(c) Name the transformer: Step-up or step down?
EASY
10th ICSE
IMPORTANT
The secondary windings of a transformer in which the voltage is stepped down are usually made of thicker wire than the primary. Explain why.
MEDIUM
10th ICSE
IMPORTANT
Why is the iron core of a transformer made laminated (thin sheets) instead of being in one solid piece?
EASY
10th ICSE
IMPORTANT
In a step-up transformer, the number of turns in the primary are _____ than the number of turns in the secondary.