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 14011

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 3168

What power factor maintain you maintain at u r organisation

Wheels India,

14 16882

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 6722

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 4839

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 3020

how to calulate bearing number of any motor ?

Transfield,

1416

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

ONGC,

1898

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

Lavasa,

1517

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?

3360

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

IOCL,

1763

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

8 79576

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

2 4943

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

1626

WHAT IS DGA TEST FOR THE TRANSFORMERS.

ABB,

3 18624


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Un-Answered Questions { Electrical Engineering }

State Maximum Power Transfer theorem.

720


what is the transformer turn ratio formula and give some examples?

1920


Please brief me about number of pole in alternator.In single phase alternator coils are connected in star or series. How to calculate frequency for the same.

1407


how calculate the electrical load for industry and office

8317


what is the purpose of shading ring or shading coil in electrical equipments.

3946






what is magnetizing and demagnetizing current in generator and motor?

2728


what is the star delta connetion and how can do it a three phase motor with control witing with picture

1795


How we select the vector group of 3phase power transformer?

1976


I need the list of Universities who have summer intake for BS degree in Electrical Engineering.?

1553


how will we calculate the copper wire load..

1445


What is different between Circuit breaker and Isolater?

1215


what reason of line current and phase current in star connection and line current and phase current not equal in delta connection?

1566


What is Bolted fault?

1673


CAN ANYBODY PLEASE TELL ME HOW TO DESIGN A SERIES REACTOR FOR LIMITING SHORT CIRCUIT FAULT CURRENT??

1441


How PSV sizing being done

1816