Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

How to select the gauge of wire for winding of motors? How to select number of turns for winding of three phase induction motor?

npcc,

2700

Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.

2051

why do we provide metallic enclosure to bus duct and then ground it?

1 4584

how to interlock 3 incomer-ACB,1 buscoupler ACB,... pls answer this question and if possible send me the ckt diagram..haifriends2910@gmail.com

2857

Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

2852

If any cable burnt how can we identify it burnt by high current of high voltage?

2408

Why we use Delta connection in the secondary side of a High Voltage transformer?

1 3757

What is the function of NER and NET?

Asian Paints, GHH RAND,

2409

what are upstream faults and downstream faults in power system

Sreetech,

2 10129

What is the difference between surge arrestor and surge capacitor?

Shreem Electric Ltd,

2 9960

why we used dc supply for field in dg set

Hindusthan National Glass,

2347

in catridge heeter watts =110, 260 v , i checked in multimeeter meeter shows 50 ohms but oms law r=v square /w 260*260=67600, and 67600/110=614.5 ohms how to caluclate exact ohms in heetre s

2 4026

What will happen when we will connect lamp in between phase and earth.

3 5238

function of apfc pannel

3 5136

Where is the best place to mount distribution panel in a house.

Wantro Technical Services,

2034

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Un-Answered Questions { Electrical Engineering }

what is the working principle of energy saver control panel. please give the complete calculation & theory.

2383

Testing report of Earthing of 3.15 MVa PTR.

2535

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1965

Define the term Capacitance and Inductance?

1074

In a flange coupling, the flange bolts are designed for

1087

What is dc current source? Differentiate between ideal and non ideal current sources?

1407

Block diagram of Power line communication?

2264

What happen to generator if i have unbalanced load?

2065

How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?

1867

11 kg trivevter meter has rating of -/5amps. And pt ratio11000/110v and is connected with 11kv ct/pt unit of cr ratio 75/5amps. And pt ratio of 11000/110v while checking accuracy of meter with HT Accuchek meter what value of PT ratio and CT ratio to be filled in Accuchek meter

1887

what is the circutor?why we use it ?

2278

What is a DC series motor?

1210

The Howland current source produces a A Unidirectional floating load current B Bidirectional single-ended load current C Unidirectional single-ended load current D Bidirectional floating load current

2055

why impudance relay used for medium transmission power system? why not others?

1422

Is it possible to download the Siemens Selection Chart(TYPE 2 coordination) for 1) fuseless selection 2)Fuse selection

8190

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