Electrical Engineering Interview Questions
Questions Answers Views Company eMail

HAI,HOW TO SET THERMAL OVERLOAD RELAY FOR DOL STATRTER FEEDER AT START AND RUNNING?

L&T,

4 11919

HAI,I HAVE 6,60KW MOTOR FEEDERS IN MY MCC PANEL.HOW CAN I DO MY SETTINGS FOR OVERLOAD,SHORTCIRCUIT,GROUNGFAULT,INSTANTANEOUS TRIP FUNCTION IN MY 4000A CIRCUIT BREAKER?

1 2123

What power factor maintain you maintain at u r organisation

Wheels India,

14 10858




I have 500A load (WHICH IS SEPARATE MDP PANEL),an MCC panel with 4000A Breaker.Already I have 2500A load.Can I connect this load directly to the Busbar since I have PROTECTION IN MY MDP Panel ?

4 4533

During the troubleshooting of an inoperative shunt generator, you found the voltage to be 2+ volts; what is known from this. Is it (1). odds are the armature is good (2). odds are there is no field current flowing in field windings (3). odds are the armature is bad (4). both 1 & 2 are correct (5). both 2 & 3 are correct

Air Force,

2 3013

We are having a 2000KVA DG set. It trips with Over speed and Engne Hot when the mahine is stopped in full speed. How shall I analyse the block load and reverse power.Is the problem related to power factor. The machine which runs on this DG is having all Synchronous motors with incividual Drives.

1 1799

how to calulate bearing number of any motor ?

Transfield,

710

how we can find of current direction(supply comming/out going direction) when a transmission line passing through sides.

ONGC,

1079




why various test are performed on electrical panels & power cables before commissioning on site & what are these test???

Lavasa,

782

I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

2517

sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan

IOCL,

909

what is the significance of KV & MVA rating of the transformer and how they are related.

8 65268

what is the permissible bend in the LT& HT CABLES.

2 3473

WHAT KIND OF LIGHTENING PROTECTION SCHEMS CAN BE ADOPTED FOR THE FLAT ROOF OF BIG DIMENSION.

834

WHAT IS DGA TEST FOR THE TRANSFORMERS.

ABB,

3 15627


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Un-Answered Questions { Electrical Engineering }

any one can explain the stages of a knee point which is taken during ct magnetising curve.

570


diff b/w normal grounding and resistance grounding

659


What is meant by load angle of an alternator? Upon what factors does the load angle depend?

1438


in general it is observed in power stations, the tertiary winding is used in higher rating Y-Y auto transformer but not in Y-Y power transformer. is the tertiary winding is compulsory then why it is not using in power transformer 

483


does not the circulating current in a transformer affect the flux distribution in the transformer core

672






While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens

767


what is the Pickup/drop off ratio in BCPU relays

1627


HELLO SIR, IAM PREPARING HPCL EXAMS. SO PLS SEND MATERIAL OF HPCL ELECTRICAL ENG..TO VIJAY_8888@YMAIL.COM

693


I NEED RRB SYLABUS FOR JE ELECTRICAL ,PLEASE SEND TO MY E- MAIL ID joo28_eee@yahoo.co.in

1653


Which level of the Transformer oil got dielectric strengh? And why?

845


what r the safety measures in UPS ? explain all?

868


How to calculate the size of earth cable to earth the neutral of UPS ?

581


what type of earthing do for dry fissure rock?

1270


can we make a electric generator,which can not use any type of fuel,air,solar,gas,thermal,coal,petrol,etc and able to produce electrical energy (or self electricity generating generator)

758


How phase displacement change in the over current relay coils.

1138