Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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 15292

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 3894

What power factor maintain you maintain at u r organisation

Wheels India,

14 20557

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 7912

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 5912

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 3847

how to calulate bearing number of any motor ?

Transfield,

1865

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

ONGC,

2347

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

Lavasa,

1944

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?

3771

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

IOCL,

2176

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

8 82992

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

2 5720

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

2086

WHAT IS DGA TEST FOR THE TRANSFORMERS.

ABB,

3 19797

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.

2539

How do I calculate a WTI CT ofa 1250kVA 6600/400V transformer

1713

What will happen if the voltage in my house drops from 220V to any lower voltage?

2134

If VFD is On but no starting commond on it. so how many outpout voltages of VFD

1118

if two transformers are placed parallel & both have fault impedance of 50KA will it increase or decrease show example?

1952

what is the solution for meger test failed the MV cable?

4195

What if high voltage side circuit breaker of a ehv transformer instead of lvcb? Kindly elaborate.

1708

Where is servomechanism used?

1139

what is differentila pilot supervision in the incomer control panel in the power station?

2054

How to calculate the multiplying factor for energy meter with ct ratio given

1979

Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.

2029

If o/p power is doubled by how much does the sound increase

1046

List examples of voltage source?

979

Why strting torqe high in inducation motor?

2104

Why did lightening arrestor solid copper rod head is sharp on mobile tower top?

1966

For More Un-Answered { Electrical Engineering } Questions Click Here