Answer / kishore

DUE TO MAGNETOSTRICTION IT HAPPENS COZ WHEN FERROMAGNETIC
MAG TRANF CORE IS MAGNETISED THE CORE LENGTH ALTERNATIVELY
INC N DECR N HENCE TRANSFORMER CORE DIMENS INC N DECR
SLIGHTLY
HIGHER THE CORE FLUX HIGHER IS THE HUMMING NOICE N IT
DEPENDS ON NATURE OF CORE CONSTRUCTION N CLAMPINMG

Answer / rajesh tokalapudi

This is mainly due to magnetostriction.means whenever a
ferro magnetic material is subjected to magnetism its
dimenstions will change.this will results in some noise.

Answer / sureshreddy gummadi

DUE TO MAGNETOSTRICTION IT HAPPENS COZ WHEN FERROMAGNETIC
MAG TRANF CORE IS MAGNETISED THE CORE LENGTH ALTERNATIVELY
INC N DECR N HENCE TRANSFORMER CORE DIMENS INC N DECR
SLIGHTLY
HIGHER THE CORE FLUX HIGHER IS THE HUMMING NOICE N IT
DEPENDS ON NATURE OF CORE CONSTRUCTION N CLAMPINMG

Answer / banamali mohanta

Humming noise in transformer is due to MAGNETOSTRICTION
which causes change in length of core as per the density of
flux

Answer / pavan

When we supply ac volatage to the the ferrite material there
is change in its length this process is called
magnetostriction.The core of the transformer is made of
ferrite material so that when voltage is flowing through
transformer a change occurs at runtime due to this a humming
noise will be produced on the transformer.

Answer / suhani

Magnetic flux in a ferromagnetic material, such as the core,
causes it to physically expand and contract slightly with
each cycle of the magnetic field, an effect known as
magnetostriction. This produces the buzzing sound commonly
associated with transformers, and in turn causes losses due
to frictional heating in susceptible cores

Answer / siddesh cs

It mainly happens when inductive loads are connected to transformer. inductive load which will produce harmonics so t/c produce noise.

Answer / mahendra sonsare

Due to eddy current loss and laminated core was not press
fit and insulated from one to another due to air gap the
sound occurs.

Answer / sethar12

Transformer noise is mostly due to third harmonic.

Answer / abid ali khattak

due to the eddy current losses. Because whenever we provide
the power supply to the transformer emmidiatly flux run in
the core.hence due to the silicone immitted core the
insulation between one layer to another layer is becomes
lettle and the fulx will go high which is becomes vibration
and giving the noise. Which we can observed nearby the
transformer.

How to connect surge arrester with equipment?

1 Answers   Godrej,

why do we carry out winding resistance test?

0 Answers   MahaGenco, MAHINDRA,

I am final year b.tech student..i applied for gate but i am not interested any of my engineering subjects. i am interested in management wise.. is my option correct after b.tech..

1 Answers  

What is the pro & con of having 11kv & 33kv incoming, and what is the adv & disadv. of converting from 11kv to 33kv.

0 Answers  

What is BusBar integrity test and how it is conducted?

0 Answers  

What is the distance between body earthing and neutral earthing.?

1 Answers  

What is meant by (2 x 185) AYFY cable

3 Answers   ONGC,

1.what is difference between ATS & STS main use. 2.what is difference between ACB& VCB With symobles,and main partes, manimum range. 3.How many types of relays and main function.

0 Answers   Visa,

how to set the time in digital timer ?

0 Answers  

how to choose the cable size for 100A(is there any formula please update)

6 Answers  

What are the advantages of skewing of cage rotor conductors?

0 Answers  

whit is 33kv power 300*300 cable full current with formula

0 Answers