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प्रश्न
In a transformer, the frequency of A.C. voltage ______.
पर्याय
increase
decreases
remains same
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उत्तर
In a transformer, the frequency of A.C. voltage remain same.
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संबंधित प्रश्न
State the principle on which transformer works.
Describe briefly and two energy losses, giving the reasons for their occurrence in actual transformers ?
The input and output voltages of a transformer are 220 V and 44V respectively. Find the current in input circuit if the output current is 2 A.
State the principle of a transformer.
State the factors on which the frequency of the alternating e.m.f. depends.
What is Transformer?
Devices which is used to convert high alternating current to low alternating current is ______.
The primary winding of a transformer has 100 turns and its secondary winding has 200 turns. The primary is connected to an a.c supply of 120 V and the current flowing in its is 10 A. The voltage and the current in the secondary are ______.
A transformer consisting of 300 turns in the primary and 150 turns in the secondary gives output power of 2.2 kW. If the current in the secondary coil is 10 A, then the input voltage and current in the primary coil are ______.
Mention two main sources of power loss in real transformers.
