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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 4806

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 2025

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

2 3319

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

912

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

3929





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

1 3942

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 2855

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

2 2384

why plc need seprate earthing?

2 9248

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

2 2647

what is difference between fuse and breaker?

6 5280

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

2 3889

why are transformers rated in KVA and not in KW

8 8371

why our power production in multiples of 11.

2 3046

which relay is used on long transmission lines

10 22888

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Un-Answered Questions

Hi,Friends, I have a simple question in my mind that I have one head office that in faridabad and other branch in delhi,i purchase material in delhi for availing the tax benefit in delhi then i transfer the same material to head office(faribabad) agianst "F" form,i purchased material in delhi basic price rs. 5 +.42 taxes it comes rs. 5.42/-,my question is on which amount i should transfer the material from delhi to faridabad i.e 5,5.42 or 5 + freight(if any).kindly please solve my problem.

647


Why won't the virtual key codes work in program?

684


reverse a number ( like 1234 into 4321) using malloc in C programming

776


what is the importance of Partial Dischage test for Electrical Equipments

730


how to produsing geretor power

838






What is direct mount and indirect monut?

1338


what is the apt definitions for apparent power ,active power and reactive power?and explanation about different types of lamps?

1001


how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets

945


Received credit note for Rs 3500 towards transport charges on the goods supplied from Vinod traders. The transport charges were already paid at the time of delivery. Pass entries at the time of payment of transport and for credit note

857


How to explain WMLScript Syntax?

631


how to stop beam concrete between column

1102


Why different Pressure switch used in marine boiler water circulation system

518


when we want bought a new asset (for ex. car)how we calculate our income with the eye of income tax

795


in the design of a rack and pinion with the pinion having a pitch of 4in and a teeth number of 45,how many teeth should a rack of length 196.850in have

1089


What is the Difference B/W Onclick() and Oncommand() in ASP.Net? If Possible Explain with Realtime Example?

1971






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