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

what is load vs Torque curve & why it is used?

0 Answers  

Slipring moter find external resistance

1 Answers  

Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.

0 Answers  

In 1000KVA Transformer why does we connect HT with delta connection and LT with star connection.Illustrate by showing formula?

4 Answers   Tata Motors,

A cotter joint is generally used to transmit

0 Answers   Caterpillar,

The ohm is the unit of:(a) Charge(b) Resistance(c) Power(d) Current

2 Answers  

why capacitor is placed in fan

4 Answers  

How to increase solar cell efficiency ?

1 Answers  

What are the temperature elements?

0 Answers  

reason of capacitor failure or low voltage in alternator wtih 10kva dgset

0 Answers   adag,

why a tester wont shock while testing the power in house

0 Answers   Tessolve,

Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?

0 Answers   HCL, Reliance,