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ABB Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

6 12979

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

3 10686

when is the Ohms law is applicable?

11 15359

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

5 7375

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

7 6309

what is different between IP55,IP54 and IP66?

2 50877

which technique servo motor tested o.k or faulty ?

1 2993

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 5085

what is a difference b/w earthing & neutral?

5 7583

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

2 17502

What is the difference between MPCB and OLR?

11 41155

What is Meant by Load factor in Power plant?

2 11417

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 7548

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ABB Electrical Engineering Interview Questions

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