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BSNL Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What are the different protection systems takes place on control panel board?

7 23651

what type of relays used in transformers?

24 60155

If single phase voltage level is 230V than why three phase voltage level is not 660V ?, but it is only 440V.

16 70633

how to check the earth resistance value& what is the minimum earth resistance for good earthing sysytem.

33 145045



roles of owslaw explain?

3 5912

if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

1 2034

if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .


How will you Physically differentiate A.C and D.C motor?

10 18781

In Railway,why we are used HT Line 25KV ?.why we are not used 11KV,33KV and others for This?

37 38168

The power consumption, in case of centrifugal loads (like pump, fan, blower etc.), proportional to ____.

2 20413

What happens if a +vely charged particle is placed in the centre of a room and assume that the north side wall is having magnetised with north polarity and south side wall is magnetised with south polarity. In which direction the particle will move

5 6153


4 7541

ouestion for the post of section engineer

1 3721

1.two coupled coils with L1=L2=0.6 H have a coupling coefficient of k=0.8 the turns ratio N1/N2 is......

5 29154

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If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.


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