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प्रश्न
Write the function of a transformer.
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उत्तर
A transformer is a device that changes or transforms a low alternating voltage into a high alternating voltage or vice versa.
संबंधित प्रश्न
A power transmission line feeds input power at 2200 V to a step-down transformer with its primary windings having 300 turns. Find the number of turns in the secondary to get the power output at 220 V.
Mention various energy losses in transformer device
Complete the following sentence :
……… energy is converted into …………energy by an electric motor.
Explain why an induced current must flow in such a direction so as to oppose the change producing it.
Name two kind of energy loss in a transformer. How is it minimized?
The input and output voltage of a transformer are 220 V and 44 V respectively. Find: the turns ratio.
Name three losses of energy in a transformer. How are they minimized?
A transformer is used ______
On which principle is a transformer based?
How is the laminated soft iron core made?
