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प्रश्न
What is the function of a step-up transformer?
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उत्तर
We use a step-up transformer to push up or step up the voltage of a given a.c. source.
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संबंधित प्रश्न
Draw a labeled diagram of a step-down transformer.
What is the function of a transformer in an a.c. circuit? How do the input and output powers in a transformer compare?
The primary coil of a transformed has 800 urns and the secondary coil has 8 turns. It is connected to a 220 V a.c. supply. What will be the output voltage?
State the underlying principle of a transformer. How is the large scale transmission of electric energy over long distances done with the use of transformers?
A transformer is used to step up an alternating emf of 200V to 440V. If the primary coil has 1000 turns, calculate the number of turns in the secondary coil.
Why is the core of a transformer made of soft iron?
A 200V/120V step-down transformer of 90% efficiency is connected to an induction stove of resistance 40 Ω. Find the current drawn by the primary of the transformer.
A power transmission line feeds input power at 2300 V to a stepdown transformer with its primary windings having 4000 turns. What should be the number of turns in the secondary in order to get output power at 230 V?
For an ideal step-down transformer, the quantity which is constant for both the coils is ______.
The primary coil of a transformer has 60 turns whereas its secondary coil has 3000 turns.
If a 220 V ac voltage is applied to the primary coil, how much emf is induced in the secondary coil?
