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ABB Electrical Engineering Interview Questions
Questions Answers Views Company eMail

we use 400/5A ct and 35/roor3KV,/0.1/root3KV,0.1/root3KV pt ratio. What is the multiple factor of this meter.


what factor is necessary during design of HT & LT MOTORS.

2 4555

Why transformer rating in kVA not in kW?

5 4432

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 1095

Find defination of KVA convert in to KW.

4 5349

how to calculate cable size in diffrent loads?


What is majour reason of Electrical Arcing ?

9 6408

how much current a 100 sq mm busbar will carry?

1 3220

what is the function of 1 phase preventer?

3 23047

What are the maximum and minimum ratings of MCB,MCCB,ACB,OCB,VCB and SF6 breakers?

2 28055

in transformers for ex. 100mva and 400kv the secondary current is about 420 amps but for selection of bushing the capacity of selected bushing is 2000A why there is such big difference ?

2 2909

what is creepage distance in sub-station?

3 6845

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

5 4598

Mechanism of Wye Delta Starter?

2 3171

can we use only a isolator in the subtation..

1 2781

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ABB Electrical Engineering Interview Questions

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You see the following on a status report: redo log space requests 23 redo log space wait time 0 is this something to worry about? What if redo log space wait time is high? How can you fix this?