Answer / student skill

Parrafinic or naptha

Answer / som

Transformer oil or insulating oil is usually a highly-refined mineral oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil-filled transformers, some types of high voltage capacitors, fluorescent lamp ballasts, and some types of high voltage switches and circuit breakers. Its functions are to insulate, suppress corona and arcing, and to serve as a coolant.

Answer / sameer sehgal

Polychlorinated Diphenyl

What is difference between mcb and mccb.

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how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

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why earthing point in the 6amps/16amps socket bigger than the remaining (Phase & Neutral)points.

1 Answers  

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what is swirl induction in i.c engine????????

1 Answers   Ashok Leyland,

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if i have to use 14 kw what size of power cable can i use and size of earth cable also.

2 Answers  

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How do you calculate the actual power consumption of an inductive load appliance. Say, a deep freezer of 200watts

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Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?

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Then what do you call a transformer that is installed on the ground?"

1 Answers  

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I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

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why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor

0 Answers   Indcoil Transformers, Power Grid,

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explain different losses in a transformer.

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types of arc quenching methodes

2 Answers  

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