Answer Posted / pappu meena
Jel earthing should be done in rock/hill areas.
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For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.
what is meant by brushed alternator & its working principle ?
I have a current transformer with 1 main reading meter with transformer outside the building and a control panel having 5 CT reading meters with black round coils inside the building. I want to know, A) when current pass through the Transformers, will the current be reduced or be the same and after that B) when current pass through the CT meters with black round coils, will the current be reduced or be the same. C) in the above process will the reading of the main meter be same or different, from the total reading of all the 5 CT meters.
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if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?
What are the factor to be consider for CT selection in 132kV substation?
How to calculate Ith (I thermal) for curent transformer
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What is speed mode?
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Write down the brushes of a de machine.
how we can find of current direction(supply comming/out going direction) when a transmission line passing through sides.
What is the current carrying capacity of 0SWG,3SWG,10 & 12 SWG solid bare overhead copper conductors?
