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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 40225

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 6336

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

9 41997

What is system earthing?what are the types?

1 2065

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

1 2513

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


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 6739

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

5 11820

what is the purpose of battery tap voltage.

3 17161

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

8 22789

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


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

1 12133

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

5 9414

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

3 4901

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

8 16376

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ABB Electrical Engineering Interview Questions

Un-Answered Questions

What is the significance of bs 3 or 4 engines?


Why do we only use the main method to start a program?


What do you understand by Thrift?


So is xaml meant only for wpf?


Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.


How to you define your goals in life? Do believe in making plans and strategies for the future or believe in grabbing opportunities as they come?


What is the difference between static polymorphism and dynamic polymorphism?


What is the method to avoid overfitting?


Name some of the constants in php and their purpose.


What is the feminine of a tomcat?


Please explain when is the python decorator used?


Explain the difference between association, aggregation and inheritance relationships.


what is Single Byte Overhead...?


How do I align an excel spreadsheet?


Which of the following describes the cost of quality associated with scrapping, rework, and downtime? A. Internal failure costs B. External failure costs C. Prevention costs D. Appraisal costs