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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 4581

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 1850

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

2 3055

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

761

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

3406





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

1 3735

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 2626

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

2 2156

why plc need seprate earthing?

2 8698

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

2 2463

what is difference between fuse and breaker?

6 4941

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

2 3591

why are transformers rated in KVA and not in KW

8 7493

why our power production in multiples of 11.

2 2789

which relay is used on long transmission lines

10 21554

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Un-Answered Questions

How will you hack someone's gmail or yahoo account.

913


How to create a console application in Kylix?

868


I am completed BE electronics and communication engineer I have 4 years experience in mainteance dept .am applying for c license is possible...How 2 get c license

296


Please tell me the quantity of cement, sand, flyash, foaming agent required for 1 cubic meter of cellular lightweight concrete blocks. also , is there any admixtures required for the CLC blocks production.

900


We are preparing another project which involves Waste heat recovery from a 1 MW GE Engine. The Engine in particular gives out flue gas at 487Deg C with a flow rate of 5650 kg/hour and this can be cooled to 180 Deg C. This gives a thermal output of ~ 594 KW that is available for input to VAM via heat exchanger / boiler. Additionally 581 KW will be available from engine jacket water (temperature profile 80/ 80 Deg C and a flow rate of 50m3/hr) Our estimation is that 300 TR of cooling is possible with a suitable VAM machine(s). Please advise what is the most suitable arrangement with maximum TR and min Capital expenditure. plz reply me as early as possible

641






do we consider shrinkage factor for calculating cement consumption for CM mixes for different works?

337


Who are the founders of YAHOO & GOOGLE?When they founded?

788


how to pass this entry in tally? Dear Sir, I have just started learning tally . I am practicing tally. and I am following 11th Std book for practicing. Please help me with the following entry. I know dr and cr part but having problem in grouping. Please Help. Introduced goods of Rs 10,000, cash Rs 15,000, furniture Rs 5000, debtors of Rs 1000 and commenced business. What will be the entry and group for each ledger. Please Help.

203


tell me about ur daly routine

1141


DIfference between F-43

160


what is the difference between R/3 Internet sales and CRM Internet sales?can a plant be assigned to multiple company codes?can a sales org. be assigned?

1085


What is UDP (User Datagram Protocol)?

581


what is the significance of line of action in gear?

692


one kg of gas is compressed adiabatically from 1 kg/sq.cm,1 cubic metre volume and 300 kelvin to 5 kg/sq.cm,0.5 cubic metre and 400 kelvin.work transfer in this process will be

1629


In Turbine how the balence piston works and what is the direction of leak of steam flow.

1730






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