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 11765

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 2036

What power factor maintain you maintain at u r organisation

Wheels India,

14 10348




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 4397

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 2882

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 1692

how to calulate bearing number of any motor ?

Transfield,

659

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

ONGC,

1015




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

Lavasa,

721

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?

2439

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

IOCL,

827

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

8 63298

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

2 3378

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

759

WHAT IS DGA TEST FOR THE TRANSFORMERS.

ABB,

3 15299


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Un-Answered Questions { Electrical Engineering }

How can i get my certificate of competency as an electrical supervisor? I have complicated my B.Tech from Uttarakhand technical university this year (2012).

2747


Explain the propagation of harmonics in the network and influence of phase angle of harmonics.

710


What is the BS(British Standard)code for 11kv motor

2904


what is the minimum clearance between a 11KV 150KVAR capacitor cell and series reactor.can a series reactor can be mounted in the same structure of the capacitor cells structure

771


how to wiring it with contactor and timer together

537






do any one help me to get "C" license,, i have doubts ,,, if mediators ter pls call me,, my no is 8056640042

270


how to Select Lighting arrester? What r the parameters to be considered for the selection of Lighting arrester ?

392


what is the difference between gas group b and gas group c electrical equipment construction wise?

608


How many points does a Circuit can have?

672


I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

593


please send me the L&T Emb. sys. placement papers and entire details of pattren

974


how we arrange the hv side with delta connection in case 33/11kv of transformer.

732


WHAT IS SHORT CIRCUIT STRENGTH OF 100 AMPS MCCB?

856


how withstand of hi-pot test outputs of transformer wire 2.5mm

638


Iin ESP why positive is grounded ? why not negative ?

961