Answer / nilkanth tailor

Basically, we used ferromagentic material in core...when
magnetic flux linked with thid core..thier is some
physically expand and contract slightly with each cycle of
the magnetic field...and that effect known as
magnetostriction..(Magnetostriction is a property of
ferromagnetic materials that causes them to change their
shape or dimensions during the process of magnetization...
it was first identified in 1842 by James Joule when
observing a sample of nickel)...due to this effect causes
fluctuating forces between the primary and secondary
windings. These incite vibrations within nearby metalwork,
adding to the humming noise, and consuming a small amount
of power.

Answer / yasir wani

coz of eddy currents flowing in the core , and leakage
currents from leakage inductance to ground

Answer / srikrishna

the ansr given by mr.nilkanth is only the right ansr.
gud wrk pal.

Answer / neeraj

it is cause due to losses in winding

Answer / nishant2110

Nilkanth Tailor's answer is correct

Answer / hardip dodiya

Nilkanth Tailor's answer is 100 % correct. Gudwork Nilkanth. continue your sharing which give us confidence in Transformer Field

Answer / hemant kumar

the reason of this type of noise is due to harmonics
genrated in transformer.

Answer / ghanshyam singh

i think it is due to mechanical fault which arose while
manufacturing the transformer
due to the small gaps in the core

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