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ABB Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is Single Phasing fault???(not single-phase fault)

6 13217

How we calculate the current carriying capacity of the different sizes of Aluminium busbar ?

3 10779

when is the Ohms law is applicable?

11 15723

What makes the difference between 50Hz supply and 60Hz supply which one is economical? What is the use of using increased frequency?

5 7486

why middle phase should used for earth fault and other phases used for over current in overcurrent and earth fault relay?

7 6429

what is different between IP55,IP54 and IP66?

2 51257

which technique servo motor tested o.k or faulty ?

1 3058

If we have a 2000kva load,How much kvar capacitors we go to add to improve the power factor at 0.9?pls give the calculation and fully theory?

2 5156

what is a difference b/w earthing & neutral?

5 7711

What is the difference between Class PX & Class X CT's

2 17786

What is the difference between MPCB and OLR?

11 41712

What is Meant by Load factor in Power plant?

2 11504

What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?


What are the factor to be consider for CT selection in 132kV substation?


what size of copper busbar use for 11kv 630A

3 7635

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ABB Electrical Engineering Interview Questions

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