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ABB Interview Questions
Questions Answers Views Company eMail

Why do not use fly ash bricks for waterproofing.

3 8254

what is ripple ??? what is harmonics ?

3 9557

how much current in live 11 Kv distribution Line?

1 4102

if we going for high voltage usages what are the considering factors, why those factors are effected.... please give me an answer related motor factors like wnidnig, frame, temp etc

1 1082

what is the function of 1 phase preventer?

3 23012

What is d role of reactive power in power system??How it produce & consume?

5 4571

can we use only a isolator in the subtation..

1 2760

what is the reson in a/c system that TPN TRIPPING


what is CFC logic in communication system? where do we require this for protection system

3 6315

why transformer rating is in KVA?

4 4876

what is mean by dual digital protection in the relay field?


how much mininmum length required to conduct a DC Hipot Test on 33kV AC Cable with 45kV DC? Is it 20meter or Less then 20?


Hello friends., my question is related to testing of current transformer... A Ct having knee point voltage of 750 volts., and I have two step up transformer's of rating 230 v to 440 volts., can I obtain the value of 750 volts by using the two transformer's.... If yes then how could I connect the transformer's to obtain knee point voltage?? thank you in advance

1 3207

Who we calculate the generator NGR resistant, generator voltage 11 KV ?

2 3388

is earthing is necessary if we use armoured cable

1 3683

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