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Electrical Engineering Interview Questions

how does it help for selection of a transformer.

2433

what is the difference between elcb and rccb ?

1344

In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?

1071

In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?

13181

how can a race around condition be eliminated using master slave flipflop?????

29417

What is the formula to find out the kvar required to improve the powerfactor from .85 to .99 at 1500kw, 415v.

15004

can we find the inductance of a induction motor?

1148

What is the winding resistsnce need to be in a 1000kva, 11kv/415v transformer, between ht winding to lt winding, ht winding to earth, lt winding to earth.?

4375

where can i get vijaya electricals limited in hyderabad interview auestions can u give me the website address plz

1123

is it possible to flow a current between nutral and earth in a circuit? although nutral and earth having same potential diffrence? i=0/r=0A if any body now any solid reason because i am getting a triping problem in rcbo due to nutral and earth shorting???

2534

Is there any calculation to find unknwon(unferroled) phases R Y B in alternator,3 phase motor anybody shoot my problem. how can we notice this is the respective phase?

2679

if an alternator or turbine using fuel to produce ele energy and we didn't connect load to the ends then where was gone the ele energy

2562

Is there any calculation to find unknwon(unferroled) phases R Y B in alternator,3 phase motor anybody shoot my problem. how can we notice this is the respective phase?

3808

what is the difference in operation of 3 phase motor when am forward delta connection and reverse delta connection?

2871

Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?

1113

Un-Answered Questions { Electrical Engineering }

why we have to particulary use ACB for below ratings,even available of MCB,MCCB with that range ?

2095

plz send me the procedure and syllabus for mseb exam

2994

At full load wat is the motor p.f And at no load will is the motor p.f?

1319

why we change the direction of winding in rotor ?how we make the north and south pole?

1208

Name of the relay of low lub oil presuure in DG sets

1221

what should be the ideal gauge of wire (In sq mm) for different loads in Ampere?

534

why any centrifugal blower draw more current in starting. consider id fan and fd fan?

936

What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

1509

1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

3842

What is a single phase autotransformer?

254

y we use neutral,all r told its used to for closed path..k its a just used to closed path,in a transmission line y we put same conductor used n both phase and neutral..if we use less than phase conductor in neutral mean we ll reduce cost its right r wrong..if we use mean any problem occur in transmission line..

1146

On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

2807

hey guys help me out.....what  are the industrial uses/functions of nozzles in industries

776

Why choke coil is connected in series with starter in tubelight??why starter is connected in parallel to tubelight??

2437

While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

1067