Transformer on No-Load
An ideal Transformer is one that has no core losses and copper lossers. But in practice it is very difficult to get an ideal transformer. When an actual transformer is connected to load, there is iron loss in the core and copper loss in the windings (both primary and secondary). Whenever load is not connected on the secondary winding and primary winding is connected to a.c supply, the condition is said to be no-load condition of the transformer.
Consider a practical transformer whose secondary is open-circuited (I2 = 0 on no-load) and the primary is connected to a.c. supply as shown in fig, 1.17 (a) The primary winding has high inductance and low resistance. T
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