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प्रश्न
Describe briefly and two energy losses, giving the reasons for their occurrence in actual transformers ?
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उत्तर
Energy losses occur in transformers:
(i) Flux leakage: Not all of the flux due to primary coil passes through the secondary due to poor design of the core or the air gaps in the core.
(ii) Eddy currents: The alternating magnetic flux induces eddy currents in the iron core and causes heating.
संबंधित प्रश्न
A transformer converts 240 V AC to 60 V AC. The secondary has 75 turns. The number of turns in primary are _______.
(A) 600
(B) 500
(C) 400
(D) 300
On which type of current do transformers work?
Why is the iron core of a transformer made laminated (thin sheets) instead of being in one solid piece?
Can a transformer be used with direct current source? Give reason.
What is the function of a step-up transformer?
Transformer works on ______.
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 ______.
Draw the effective equivalent circuit of the circuit shown in figure, at very high frequencies and find the effective impedance.
Mention two main sources of power loss in real transformers.
