Why do you get a typical sound when the transformer is put into operation?

Question Posted / sami89_ali

4 Answers
8780 Views
IIT, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Why do you get a typical sound when the transformer is put into operation?..

Answer / mgalalkhedr

This is normal due to thr inrush current. the sound can be
heared for one to two sec.. some times and according to the
relay settings the transformer may be tripped on over
current and it is normal

Is This Answer Correct ?

11 Yes

1 No

Why do you get a typical sound when the transformer is put into operation?..

Answer / hari

Transformers are made with lamination & Cu wire is wounded above them,& the humming sound is heared due to magnetic field produced when current is flown in the winding

Is This Answer Correct ?

6 Yes

1 No

Why do you get a typical sound when the transformer is put into operation?..

Answer / nilamani umashankar jena

it is due to magnetostriction of core.if you want to know
what is magnetostriction then go back to wiki.

Is This Answer Correct ?

3 Yes

1 No

Why do you get a typical sound when the transformer is put into operation?..

Answer / sarmadahmed

The buzz sound often related with the transformer is due to the flow of Alternating Current through it, for half cycle all electrons are moving in one direction and for next half on opposite direction, electrons collide while changing the direction and constitute the buzz sound. If you provide a DC even fluctuating you won't get any sound.
Also since sound is energy, some energy is being lost in this.

Is This Answer Correct ?

1 Yes

1 No

Post New Answer

More Electrical Engineering Interview Questions

total numbers of earthing of a transformer

1 Answers

Wheather there exist any dc transformer

6 Answers

What is expention fastener (Fan)

0 Answers

WHWT IS USE OF VACCUM CIRCUIT BREAKER

4 Answers

I have a 380 KVA DG set. How can i find out 1. My Fuel Consumption per hr ? 2. Electricity produced in 1 Hr. ? 3. If load varies then how does it affect fuel consumption & electricity produced ? Please HELP !!! Really need an answer.

0 Answers

only three phases are coming in step down tranformers.how to get neutral?

5 Answers

WHY BLADE & JOW OF ISOLETOR IN SUBSTATION?

1 Answers BRG, Voltech,

What is the field weakening mode of a ac motor?

1 Answers L&T,

For which purpose the temp. rise test of transformer is conducted?

2 Answers

What is the function of Igniter in 250 watt HPMV street light?

1 Answers

why do we prefer alternating current in india where as in USA prefers DC?

3 Answers Bhel, GMR, Texmo,

To transmit the Power which must be present…? a) Reactance b) Resistance c) Capacitance d) none of above

9 Answers ABC,

For more Electrical Engineering Interview Questions Click Here