Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Which motor isused in indian railway system?

3 5174

Is Indian railway uses 25000v ac or dc?

7 8540

how and where does star and delta connection is used ?

2 4131

sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.

2479

what are the particle used along with silica gel in transformer breether,explain their functions.

ME, Oil India,

4 6323

what is the difference b/w permitivity and permeability

1 2801

how many hvdc lines in india???

1548

If the field winding of the dc shunt motor is removed then what will happen to the motor ? will it turn or not

2 3155

If Ac supply is given to the DC motor then what will happen? clear explanation

2 3960

When we give supply to a transformer 11 kv and we get 415v from it, so when we give supply to same transformer 415v on ht side what we get? and When we gives supply to any transformer to L.T. side 415v or 220v What supply is on H.T. side?

Ashoka Electricals,

2 7420

If we are given a 10 amp cable type and asked to calculate the number of cores used and the thickness of the cable, how do we do it?? please help...urgent!! i hope the question is clear enough!!

1392

what is difference between short ckt and overload?

Siemens,

6 9814

why most of the modern day type electrical appliance have 2 pins rather than 3 pins?

4 4472

why magnet has north and south poles only why not east and west and why we are considering as north and south poles? why cant we consider as east and west?

1491

america 60hz electric supply is used; but india it is 50hz; why? and if we use 60 hz supply what changeg has to be done or all the equipment has to be thrown which has rating of 50hz frequincy

1 3492


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Un-Answered Questions { Electrical Engineering }

there are cam operated switches - why we call cam operated , What is cam ?

1465


how to Select Lighting arrester? What r the parameters to be considered for the selection of Lighting arrester ?

1184


What is the difference between the impedance percent and impedance voltage ?

1688


Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

1677


7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

1767






i am trying to PSUs/govermeant jobs since last 2 years but still i m not success, plz help me.

1449


how to calculate the cable current ratingand and how much of distance the rating will be ok will the distance is incresed what the action we take

1610


I want to put this query to SENIOR & EXPERIENCED ELECTRICAL ENGINEERS. 1)I want to know about the control circuit diagrams for control panels. I found it difficult to understand. Is there ant booklet through which we can learn the circuit diagrams? 2)I want to learn about conduiting, laying cables, preparing cable schedules and various techniques which is the part of building infrastucture(construction field). I don't have any experience in this area. I have experience in control panels only. that's why i am not getting any opening in building infrastucture (construction field).Can I get the job in this field as Trainee Engineer? How to enter this field? I need job in PUNE

1483


any one can explain what is the size of pvc,armoured, various sizes of powr cable dia?

1437


send me any model test paper of clerical post of state bank of india.......

1372


DG Earth Value?

1851


When lag/lead/lag-lead compensation is employed?

720


What is the name of transformers oil filteration equipment?

1582


is the value of inductance depends upon the value of thitha in doubly excited machine??

1557


State thevenintheorem?

589