Answer / sneha

DUE TO VARIATIONS IN VOLTAGES,VARYING MAGNETIC FIELD IS
PRODUCED & THIS VARYING MAGNETIC FIELD CHANGES DIMENSION OF
FERROMAGNETIC ELEMENT USED AS A TRANSFORMER ELEMENT & IT
APPEARS AS A VIBRASIONS.THIS VIBRATIONS ARE SOURCE OF THE
NOISE.

Answer / sheikh

Commonly new and quality wise transformer not producing too noise but due to magnetizing + mutual induction transformer creating some noise . old transformer which is cores becoming loose may producing heavier noise.

what is the different bitween ETP & WTP

1 Answers   Square Pharma,

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if the syncronous machine run at leading pf and as its field curret increased its armature current decreased is machine operate as generator or motor?

1 Answers  

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I have current, kva How can calculate kv?

3 Answers  

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SAY CORRECT DEFINITION... WHAT IS EDDY CURRENT LOSS? WHAT IS HYSTERESIS LOSS?

4 Answers  

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how we can save electrical energy in industries,please give some inputs

3 Answers  

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What is the actual meaning between the energy conservation and energy saving ?

3 Answers  

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In supply RYB are mentioned. But in transformers, why they are mentioning XYZ?

3 Answers  

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sir my exam is on 19/6/2013 under electrical branch pls send me sample aptitude questions as well as sample technical questions for jindal steel and power company

0 Answers   Jindal,

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Welding machine

1 Answers   CEL,

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different between circuit breaker & switchgear & relays

6 Answers   EFS,

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draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it

0 Answers  

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Vibromotor 252MV 1/4HP2P..what is mean by 252MV?

0 Answers  

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