Answer / yami

What is difference between stable and steady?

while we select CT, why the CT ratio is divided by 5?? ex:250/5,15VA,CLASS-1 CT.Why it is divided by 5??Help me please

2 Answers  

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How do you maintain the earthing resistance?

13 Answers   Birla, Ford, JLL,

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what is pressure relief valve in D.G ?state its function?

3 Answers  

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can we say current flows inside an atom as electron moves inside an atom?

7 Answers   Vedanta,

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Can you explain about Restricited earth fault protection scheme

0 Answers   NCC,

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why stator winding of synchronous machine are connected in star connection ?

1 Answers  

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why DG sets power factor is 0.8 lagging.

1 Answers   Cummins,

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Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet

0 Answers   Bindal Papers,

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what is diffrential relay used in generator plz give brief explanation

4 Answers  

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Why design 150Hz in Exciter

1 Answers  

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What is the basic difference between AVR and stabilizer?

2 Answers   Gujarat Alkalies and Chemicals GACL,

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When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

0 Answers   Lupin,

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