Answer / koti1965

Due to Magnetostriction.

Answer / aarya

Most transformers make some audible sound at the frequency of the current they're operating on, for transformers running on utility power in the US this is 60 Hz. The sound is due mostly to the wire in the transformer coils and the steel in the transformer core vibrating at 60 Hz because of the interaction of the magnetic fields of these components. Some of this sound may also be due to something called magnetostriction in which the steel of the core actually expands and contracts with the fluctuating magnetic field.

Can any answer me ,What will be the range of C.T coil for L&T energy meter EM301 used for 180 kva DG set

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if z transform lies in ROC then. a)system is stable b)inverse of system is stable c)both system and its inverse are stable.

1 Answers   CCP,

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Why the cores of large transformers build up of circular cross section?

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Why 11KV PT Secondaries [(11000/1.732)/(110/1.732)/ (110 / 3)]are in star connection ? And why the same should not be in delta ?

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How big (size) can the tertiary winding be in transformer? Can we load the tertiary winding, if yes then how much we can load it?

1 Answers  

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What is time invariant system?

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What different between kw and kva. why maser AC in kva.

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I am having a 42KW 3 phase electrical heating furnace, heating element is 80/20 nichrome material, my connections is made in such a way that 2 star connection compromising 2 coils per phase so totally 12 coils, shall if i use it unbalanced star condition (instead of 2 group of 3 phase or 1 group of 3 phase, connecting 4 phases of 5 phases) what will be the consequences and is it acceptable?

0 Answers  

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What is the diffrence in between Class PS & Class 5P10 for CTs

7 Answers  

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What is the difference between magnetic loading and electric loading of a machine?

2 Answers  

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Difference between drift current and diffusion current?

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WHY DISEL GENRATOR SET SHUT DOWN IN OVER LOAD CONDITIONS

5 Answers   HMT,

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