Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how a resistor resists to flow the current?how an inductor oppses the sudden change in current?how a capacitor opposes a DC voltage.

Hindustan Unilever Limited,


what is stper motor.what is its uses

HCL, Bhel,

9 7144

In IDMT RELAY the term minimum (M) indicates what?

7 5579

why we can use 1 to 5V dc


What is the basic difference between earthing, ground and neutral?

Cognizant, Balco,

11 36014

When neutral is grounded in electrical circuit?


9 5976

Where -48 volt DC use & why?????????

Indus Towers, Ericsson, Telecom, INDUS,

10 22362

how we start 40w tube light with 4 diodes,2capacitors,1 choke and without starter.(a product avilable in market which lights burnt tube lights also)


which motor gives constant speed?

7 4138

wat will be the pressure maintained inside the transformer?

2 2394

wat is the difference between rotor 1st stage fault and 2nd stage fault?

3 2627

which electrical supply used for long distance traction 1.1-ph 22kv a.c 50hz 2.2-ph 22kv a.c 50 hz 3.dc vtg 4.1-ph 22kv 150 jhz

Power Grid,

3 3128

What are instrument transformers?

6 6079

how can we calculate the reactence of the current transformers?


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Un-Answered Questions { Electrical Engineering }

I want to make street light with solar system ... What may I do for procedure and how much of estimation for each material ... If any one knows guide me and inform this id : aravindd7@gmail.com


What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?


when will be the iocl interview results ifaced the interview on september 8 th


in indoor type circuit breakers why only the corner breaker trips specially during cold season. What is the reason.


how to select the no. of brushes in a lap winding?


hi friends ,iam working as genset AVR service engineer in electrical field from past 2 yrs throughout india . i plan to shift in some other job without travelling in same field because i con't travel,i dont know what i do for that so please guide me what job is suited for me,how i can serch the job please anybody helpme iam totally confused


please give me all the Alarm .Trip ,Safety Relays & Conditions of Diesel-generators mail me on ashokbabunhce@gmail.com


plz tell me,ht and lt panel terminals in substations explain beiefly




in a simple IDMT relay we use neutral point of ct for earth fault then what is the requirement of neutral ct and cbct?


what is the use of Auto re-closer?


Why electrical power generation and transmission done in 3 phase system not more than 3 phase ?


Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.


what is ramping rate of generator


how desiel generate sart fail of eb?