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Electrical Engineering Interview Questions
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WHICH SUPPLY IS BETTER FOR 4 MW LOAD. 1)TO TAKE NEARER AVAILABLE 11 KV SUPPLY OR 2)TO TAKE 33 KV SUPPLY WHICH IS AVAILABLE AT 10 KM DISTANCE BY INVESTING NEARLY 50-60 LACKHS

1 1325

why we use 110vac in overhead crains? why not 220v, 24v

SOFT,

3 4428

what is the profesional board for electrical engineer what is thepast and during construction for electrical engineering

1080

how pt is using

1024

in three 3.5 core aluminium ug cable. one cable is used for one phase by shrting R,Y and B wires and other 2 cables used for Y and b phases. balace 3 neutral wires are made common and connected to load. suddenly neutral current was more than line current what is the reason behind this?

DLF,

1 1301

Y phase's (RYB) r only 3,not 4 or 5?plz answered in breif?

1 2186

What is the fullform of NS fuse

Google, JAL International,

2 10721

what is transformer?

Mphasis,

4 3529

Is there is any hazard to insulation of 3hp motor 5 KV megger is used for it?

1 2123

what is meant by trivector meter?

2 2604

Why 11KV/440V distribution supply use for Domestic use?

Essar, Getco, Nissan,

3 10554

The power showed in the name plate of the motor is input power or output power?? The power showed in the name plate is 18.5kw measured current is 34.5 amps. location is india. can i calculate the efficiency of the motor using this data??

2 4148

I am EEE student i want to improve my core side skills.how cn i approach it?

Suzlon,

1538

how to select cable size for three phase?

1 3778

How out of step protection relay works?

APL,

1270


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Un-Answered Questions { Electrical Engineering }

Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?

1259


What is the disadvantage in proportional controller?

188


State thevenintheorem?

181


I want to know how to calculate the size of electricity cable in building?

1116


How do u analyse protection fault when vcb tripping on load

759






Which type of questions well asked. ?

922


Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet

1650


In the formula : Knee point voltage = Burden X alf / class, Please inform what is alf? regards Shashidhar M.R.

2502


What range of speed can you get with the field control method of speed control of d.c. Shunt motor?

191


high voltage transformer input voltage,current and amps rating..distributed transformer input voltage,current and amps rating...

1054


What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?

1183


I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.

1044


at meter room 50 hrc switch installed,but there are not get earthing proper,so what happen?and 11kv transformer out put going in to hrc main 400a three nog each? so earthing is require for all switch? (some customer made earthing at there home.)

1065


In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

811


What test must you do before powering up a circuit that you have been working on?

979