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

how we find transformer capacity by ohm

0 Answers  

we have one 75kw motor 380 volt 3ph amp134 please advise which size of cable required

2 Answers  

Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha

0 Answers  

how much Hp motor is required for water suction pump in home uses ?

1 Answers  

Why magnetic flux produces an induced current?? what is the detailed procedure ?? ans plz

1 Answers  

Hi all, please could anybody give me a suggestion about Electrical designs and calculations .. what text book should i follow as i am a trainee engineer and here work going not so favorable to me so please help me friends .. A small discription about my work which is going here is all about Electrical designs like cable sizing, lighting, lightning, Gensets sizing, motor sizing, transformer sizing, generator sizing, circuit breakers, PDB MCC PCC SLDB MLDB panels, Single line diagrams mainly, substation desings, cable routing and layouts, reactive power compensations, power factor improvement, voltage drop calculations, power generations, power transmission, power distributions all calculations i need .. please please if anybody experienced with this problem and got a solution then please help me .. just i need an apt text book for these all calculations and designs ..

0 Answers  

Why DG set is not installed in Terrace ??

0 Answers  

What is the Maximum Power generation capacity of a Synchronus Machine ??

1 Answers  

what is the highest transmission voltage in india???

49 Answers   Bhel, EIPL, Engineering, Jindal,

sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan

0 Answers   IOCL,

how is classified voltage level in generation,transmission & distribution system?,

7 Answers   Adani,

aternator every parts and its working

0 Answers   adag,