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प्रश्न
State the factors on which the frequency of the alternating e.m.f. depends.
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उत्तर
The frequency of the alternating e.m.f. depends on the frequency of rotation of the coil.
संबंधित प्रश्न
Describe, with the help of a suitable diagram, the working principle of a step-up transformer. Obtain the relation between input and output voltages in terms of the number of turns of primary and secondary windings and the currents in the input and output circuits.
Name the principle on which functioning of a transformer depends.
Copy the given diagram of a transformer and complete it. Name the parts 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.
A transformer lowers e.m.f. from 220 V to 15 V. If the number of turns in primary are 3520, how many turns are in the secondary coil?
A transformer works on the principle of ______.
Name one electrical device which works on Faraday's law of electromagnetic induction principle.
In a transformer, number of turns in the primary coil are 140 and that in the secondary coil are 280. If current in primary coil is 4 A, then that in the secondary coil is ______.
What drives current through the connected load and delivers AC output?
What do \[V_s\] and \[V_p\] represent?
