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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 4964

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 2154

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

2 3502

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

992

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

4166





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

1 4057

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 3100

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

2 2514

why plc need seprate earthing?

2 9564

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

2 2813

what is difference between fuse and breaker?

6 5526

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

2 4052

why are transformers rated in KVA and not in KW

8 8926

why our power production in multiples of 11.

2 3186

which relay is used on long transmission lines

10 23750

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ABB Electrical Engineering Interview Questions





Un-Answered Questions

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how much of the strength comes from post-production curing

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How to handling error and logging it?

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What is thermite mixture?

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What are the different types of cookies in asp.net?

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What is Fire Panel ? How it works ?

937


Hi,  Can somebody help me to know whether WCT MVAt is applicable on catering service, if the caterer is uses his own material and labour for doing cooking in our premises and later the product is sold in the same premises for the employees. Kinldy advice whether WCT will be deducted on this.

1125


what r the advantages and disadvantages of gas burners and oil one?

787


Which operator is used to combine string values in php?

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What is opsonisation?

4


What must be installed to use power bi?

1


How the values are ordered in an array?

21


How will a user connect lightsail instances to different resources in the aws account?

1


Tell us about the most difficult negotiation that you've participated in. What was your role? How did you influence the success or failure of the negotiations?

1296


How can you make real time sitemap.xml file in laravel?

6