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प्रश्न
Can a transformer be used with direct current source? Give reason.
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उत्तर
No, a transformer cannot be used with direct current source. The reason is that with direct current source, there will not be any change in the magnetic flux linked with the primary coil, so no e.m.f. will be induced in the secondary coil.
संबंधित प्रश्न
For what purpose are the transformers used? Can they be used with a direct current source?
What is the function of a step-up transformer?
The output power in step-up transformer used in practice is ______.
The primary coil of a transformer has 800 turns and the secondary coil has 8 turns. It is connected to a 220 V ac supply. What will be the output voltage?
A 60 W load is connected to the secondary of a transformer whose primary draws line voltage. If a current of 0.54 A flows in the load, what is the current in the primary coil? Comment on the type of transformer being used.
A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
What does the laminated soft iron core provide for the flux?
Which loss is reduced by laminations in the core?
Which winding is the output coil connected to the load?
