Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how do we calculate contactor and fuse rating for a motor if its full load current is known,i want exact calculation for 1.5 kw motor????

Allied Group, Nucon,

1 5085

what is the difference between 2 way and 4 pole selector switch???

Allied Group,

1842

how to calculate 'In'in a system?

2 3192

what are the importance of earthing?list different types of earthing.

1 4518

Why only 1 CVT in Y-phase is used for synchronization in 3 phase power system?

Reliance,

1 4945

What is the causes Power Factor become leading and what is the effect of Electrical system ?

2 3584

It is a three inch fan and i want it to rotate to other direction .I've tried cutting the wire and reconnecting them inverse like black to white and white to black ,but it won't start rotating when i plug it in that way.And then it works again when i rejoin the wire to the way it is. I don't know what causing the problem.Is there anyone familiar with these small mortor?Any suggestion would be appreciated.Thanks!! http://i296.photobucket.com/albums/mm163/sasukebloodwheel/110527-105859.jpg

2 2748

what is the pressure in side transformer under normal condition?

1 2875

What is SFU ?

4 6242

What is the difference between line Distance protection and Line Earth Fault Protection?

1 3195

how will you find out the fuse failure by remote operation?

1 2964

what is the purpose of using semiconductors in HT cables

Sterling,

3 21542

What is the fullform of IPS in substaion using Aluminium Tubes

L&T,

14 53310

Pl. brief about break-down maintenance of machine tool.

1354

How to Prepare preventive maintenance shedule of machine tool.

Concast,

1499


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

if a number of plc s are there then how many modbus to be used

1513


How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?

1568


what sort of general awareness questions are asked in o.n.g.c entrance exam?????????????????

4182


What is Anemometer used to measure?

656


PLEASE SEND ME NTPC RELATED INFORMATION LIKE WHICH TOPICS HAV MORE SCOPE,BOOKS TO READ,CUT OFF...PLEASE.mail at thiru.1203@gmail.com

1556






why the neutral point in connnection oscillates?

1784


What are the types of instrument transformer?

600


What is Icu and Ics and what is difference b/w them. please tell me how to calculate a size of a copper bar for a system or a breaker... reply on... king.arish@gmail.com would be waiting for a logical answer.

1901


WHAT DO YOU MEAN THE DIFFERENT TYPE OF CURVES OF RELAY LIKE STANDARD INVERSE, VARY INVERSE, NORMAL INVERSE, LONG INVERSE ETC....

1512


How to calculate the copper in HT motors if KW, RPM & Voltage is given

2558


how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1509


how does a shunt reactor maintains the bus voltage???

1553


What is maximum power transfer theorem?

621


Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm

1646


HOW WE CAN REDUCE THE CIRCUIT COMPLEX OF STAR-DELTA STARTER .BECAUSE NOW WE USING ONE TIMER RELAY & THREE CONTACTOR FOR MAIN,STAR & DELTA ?IF ANY IDEAS PLZ POST.THANK U

1972