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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what's mean by Transient stability analysis?

 1 2712

what's burden resistor, why it's used?

Bhel, TVS Group,

1 24369

what's transient & sub- transient reactance means?

 2 47275

what's ripple content in rectifier? how it formed?

 1 3283

what's float charger and boost charger? why it's used?

APCPDCL, PTCL, Rolls Royce, Siemens,

2 44429

In track electrification Either we use single conductor or double conductor? why?

 2 4470

In electric motors, according to the no. of compartments, The no. of input's (pantagraph collector's) were increased, why?

 1 2577

what's the difference between induction generator and synchronous generator?

IBM,

1 3738

what's the exact magnitude of current, flows through Neutral?

 1530

While starting a high capacity motor, it takes 6 times the full load current. Why it doesn't trip relay or CB's in that network?

 4 5987

How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

Siemens,

1 4469

HOW TO FIND OUT 1. LINE CURRENT, 2. PHASE CURRENT IN AN ALTERNATOR / TRANSFORMER WHICH IS FEEDING A I)STAR LOAD ii) DELTA LOAD, USING A CLAMP METER. NORMALLY WHEN WE USE CLAMP METER IN A DG SET THEN WHAT DO WE GET?? PHASE CURRENT OR LINE CURRENT.

Bhel,

13 32100

WHAT IS THE THUMBRULE FOR FINDING OUT THE CURRENT CAPICITY OF A COPPER WIRE?? 2.5, 4, 6MM SQUARE ETC...

 5 11550

why we step down the voltage from 440 to 220 in machines

 4 5426

is there any concept of armature reaction in Induction motor?

4 14970

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Un-Answered Questions { Electrical Engineering }

Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?

1597

use of choke in APFC panels

4867

what are carbondioxide and dcp used in fire extinguishers

1630

What is the effect of positive feedback on stability of the system?

615

i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

1537




Discribe type of fault in DOL and stardelta startor.

1795

what is the major difference between LIBBP & HIBBP.. which one is most preferable..

2005

Define active and passive network?

656

at what base you will tell the direction of rotation of dc motors and generators?

649

for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?

1518

we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer

1286

what is diff. between earthing grid,earthing mess, earting grid?

1847

how to failure indution motor insulation & how to improve heat in motor insulation

1401

IN SINGLE PH TRANSFORMER IF LEKAGE IMPEDANCE DROP IS NEGLECTED ,THE FLUX IN THE MAGNETIC CORE and the lekage flux linking a winding are a)proportional to the applied v to the winding i respectively.

1623

Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks

1393

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