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ABB Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to identify Motor leads in their order coming out from winding without tag (U1, V1, W1 & U2, V2, W2)?

6 48478

I have a transformer whose primary operates at 230V, 50Hz for which the secondary voltage will be 12V, 50Hz. What will be the secondary voltage if the primary is fed with 400V, 8KHZ Signal?

6 8365

Why TAP changer provided in primary side of HT transformer ? and why not in secondary?

9 46466

What is system earthing?what are the types?

1 2858

Why P.F(power factor)relay should not be connected to the D.G(diesel generator) incomer side

1 3380

How can we calculate the KVA rating of a Distribution transformer from its core details?

1608

What is the min.& max distance between two earth spikes is required for measuring earth resistance of an earth pit? Is the manufacturer of Earth tester decides this? Pls explain.

3 8251

What happens if the capacitive reactance of a transmission line is very high?

5 13930

what is the purpose of battery tap voltage.

3 23062

Why we Specify Transformer rating 433 V Instead of 415V ?

8 33745

what is the diff. between x'mer , isolation x'mer & ultra-isolation x'mer ?????????????

1722

what is the procedure for three phase motor differential relay testing can it do with single phase test kit?

1 14309

What is power factor ?What are the benefits of improved power factor & how. Please explain with examples.?

5 11428

What is Grounding? any difference b\w earthing? if yes plz explan??

3 6453

why generally transformer are in star to delta or delta to star used?

8 18720

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ABB Electrical Engineering Interview Questions


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