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ABB Electrical Engineering Interview Questions
Questions Answers Views Company eMail

HOW DISTANCE PROTECTION IS DONE IN EHV TRANSMISSION LINES? WHAT IS THE BASIC TECHNIQ OR FUNDA USED BEHIND THIS ? SPECIALLY EXPLAIN?IMPEDANCE METHOD.

2 6908

WHEN THESE TRANSFORMERS WINDINS CONFIGURATION ARE USED? SPECIALLY EXPLAIN REGARDING STEP UP AND STEP DOWN KEEPING IN MIND.AND REGARDING LOAD ALSO. a.star to delta b.delta to star c.delta to delta d.star to star ALSO EXPLAIN WHY V USE 415/415 TRANSFORMERS IN TUBEWELLS?

1 3729

.if the vector group of two transformers is not same n tey r connected in parallel operation then what will happen?

2 5754

PLZ EXPLIN ABOUT CLASS PS CLASS CT .WHY THEY R DESINED AND FOR WHAT PURPOSE?WHY OTHER CT CANT BE USED AS PS CLASS CT? EXPLAIN IN SIMPLE LAUNGAGE IF POSSIBLE PLZ GIVE CIRCIT DIAGRAM?EMAIL-RAJ_SINGH_0376@SIFY.COM

2081

what is meant by motor startup supervision & motor load jam protection ?

5807

what is meant by trip circuit supervision & directional or non directional over current ?

1 5506

what is formula in determining the size of Circuit Breaker for transformer with the following specifications. 7 units of 1600 volts (primary) and 400 volts (secondary). Both Primary and Secondary will have a circuit breaker which is SF6. What should be the Switchgear Main Breaker Size anf the sizes of each brances Circuit Breaker for Primary.

1 4675

How to reduce power factor correction capacitors failure in an industrial environment with vsd and computers usage in the system

2 4467

why plc need seprate earthing?

2 12080

where any change in supply line due to the incipient faults in three phase induction motor

2 4560

what is difference between fuse and breaker?

6 9441

suppose if oil in transformer is not used than what constructional change you will do,for insulation and cooling?

2 5842

why are transformers rated in KVA and not in KW

8 13721

why our power production in multiples of 11.

2 5032

which relay is used on long transmission lines

10 31638

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ABB Electrical Engineering Interview Questions


Un-Answered Questions

How does cross join work?

774


Contrast link state and distance vector routing protocols, giving an example of each.

1425


How do you ensure that your project is always on track?

774


What is hibernate criteria?

320


Do you need mcafee if you have windows defender?

750


Which is better joomla or wordpress?

139


How to get the http request in php?

854


What are the ms dos commands?

839


Explain difference between asynctasks & threads?

783


You have two pairs: new() and delete() and another pair : alloc() and free(). Explain differences between eg. New() and malloc()

930


What does alt f do?

488


What is the difference between old style and new style classes in python?

709


Explain Spark map() transformation?

303


How did great britain try to end troubles with the native american in 1763?

642


What is the meaning of the enq command?

906