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प्रश्न
Draw a labeled diagram of a step-down transformer.
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उत्तर
Step-down transformer
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संबंधित प्रश्न
Write the function of a transformer.
Express the turn ratio in terms of voltages.
The adjacent diagram shows a coil would around a soft iron bar XY. (a) State the polarity at the end X and Y as the switch is pressed. (b) Suggest one way increasing the strength of electromagnet so formed.
The following diagram in Fig.10.42 shows a coil of several turns of copper wire connected to a sensitive centre zero galvanometer G near a magnet NS. The coil is free to move in the direction shown in the diagram.
(i) Describe the observation if the coil is rapidly moved.
(ii) How would the observation be altered if (a) the coil has twice as many turns (b the coil was made to move three times as fast?
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An a.c generator generates an emf 'ε' where ε = 314 Sin (50πt) volt. Calculate the frequency of emf ε.
For an ideal step-down transformer, the quantity which is constant for both the coils is ______.
