why there is a humming noise in transformer

Answer Posted / hemant kumar

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

Is This Answer Correct ?    0 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

I have c license but I don't know eligibility of Max Kilo Volts under the electrical licensing board.

1220


where the lexical paramater will use in fron end?

1451


How good are you in resolving the commercial issues to Employer's advantage?

1884


What happens if the series current double?

1006


Define reserve-generating capacity?

661






how calculated Transformer losses.

1576


What are the operation carried out in thermal power station?

635


armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?

1640


What are the advantages of using distance protection schemes as opposed to normal overcurrent/ earth fault protection on high voltage feeders.

3028


What is Phase to Phase clearance for 800V System Operating Voltage as per IEC61439

548


where was current transformer protection units used and why??

1549


how we calculate electrical load on a building according to area?

2267


What is the ideal position cooling fan inside the dc motor?

1660


In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes

362


How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540

673