Answer / stanley

An IGBT possesses high input impedance and has low on-state
power loss,

IGBT is free from breakdown problem..

Answer / shuaib1805

1) Lower switching losses
2) Lower hate requirements
3) Smaller snubbed circuit requirements

Answer / prasad61

easy to operate & highly reliable also economy

NOW A DAYS THE POWER SUPPLY IS VERY LOW.SO THE FLURESCENT TUBE LIGHTS ARE VERY DIM.IS THERE IS ANY WAY TO INCREASE ITS BRIGHTNESS?FOR EXAMPLE ANY CONVERTER,CONDENSER?

1 Answers   Bhel,

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could anyone suggest project title

1 Answers   Engineering,

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what is the difference between high impedance & low impedance

1 Answers   L&T,

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IN A MAGNETIC MATERIAL HYSTERYSIS LOSS CAN'T BE REDUCED TO ZERO. HY?

3 Answers  

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which IS or IEC is used for earthing,breakdown voltage of transformer oil, hv/pd testing and all type of electrical testing

0 Answers  

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what is the size of ht cable of 33kv ht line and transformers ratings are 1 Mva and 5mva.please send formula also.

0 Answers  

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why u want to work in sail/ntpc as u r already in an it company where life is good, good environment no much tensions etc?

6 Answers   Sail,

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Hello friends, Can anyone explain the concept of zones in Bus bar protection and how can we differentiate the main zone and check zone in Bus bar protection

1 Answers   ABB, NCC,

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Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.

0 Answers  

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how the ac voltage are selected like 220v,415v,750v,1000v& 1.KV,6.6KV,11KV,33KV,66KV,132KV,220KV & why these are selected like these orders

2 Answers   Jindal, JSW,

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what is the diffrance between earthing and grounding...?

6 Answers   Essar,

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What do you mean by nominal ratio of instrument transformer?

1 Answers  

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