Answer / harsh kohli n delhi

The transformer is a static machine means no moving parts
such as bearing or bushes so
1)so no firction losses in bearings etc. in other words no
energy loss
2) the air gap between static and rotating parts such as
rotor windings and stater winding also consumes some energy,
waste some energy, where the transformer has no air gap
between two windings ,no losses here
hence transformer is more efficient.

Answer / ramesh behera

The transformer which is working by mutual induction process
for which the magnetic lines of forces are linked with other
in terms of voltage and current
1- there is no relative air gap motion between two winding
such as bearing or bushes
2-the primary which act as stator but no rotating torque for
rotor only flux transmission
so as no energy loss which last for more efficiency

Answer / harjeet singh

transformers where the primary and secondary windings were
of identical inductance, giving approximately equal voltage
and current levels in both circuits. Equality of voltage
and current between the primary and secondary sides of a
transformer, however, is not the norm for all transformers.
If the inductances of the two windings are not equal &
their is no any firction losses in transformerso trasformer
has mor efficiency as compare to rotating machine.

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