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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why we can choose induction machine in wind mill? why can`t use synchronous machine?

3 4303

what should be the air clearence between phase to phase, phase to earth in Medium voltage switchgear for 3.3kv,6.6kv,11kv,22kv and 33kv? Which is to be referred for this?

DLF, Sanmar, SEC,

1 5858

what are the shades for mimic diagram i.e for 3.3kv,6.6kv,11kv,22kv and 33kv? which is the IS for mimic diagram?

2 5843

What is Vk and Imag i.e Knee point voltage & Magnetising Current? How to calculate above values? How to define accuracy class 5P10?

Deccan Cements, Doosan, Torrent Power, Transco,

7 42704

FOR WHICH FAULTS OR CONDITIONS DOES A TRANSFORMER DIFFERENTIAL PROTECTION DOES NOT OPERATE???

10 8245

WHY DIODE IS CONNECTING ACROSS SWITCHES

5 6930

what is the meaning of bus bar, in electrical panels.

HLG Habtoor Leighton Group,

13 43190

what is a lightning arrester???

ABB, NTPC,

12 17899

flurescent bulb rating is to 230v,50HZ.now flurescent connected 230v,25HZ.whether nreduced frequency will affect the glowing properties of flurescent.

6 5279

what is ac servomotor??

7 6492

what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?

1 2393

what is the effect when the shunt field winding is opened in dc shunt motor (i) at the time of starting ? (ii) in running condition ?

4 13090

what is relation betn. KW & KV?

10 31668

One watt is equal to how many? we says one watt bulb,means what it consume?

3 5546

Will u plz give me simple diagram for tube light connection & also function of chock?

Bhushan Power Steel, Dalmia Group, Jindal, Practical Viva Questions, TCS, Windmoller,

8 22516


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Un-Answered Questions { Electrical Engineering }

Define branch?

149


what about SAP/MRP regarding manufacturing of electric motors and all drives?

1112


what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks

978


either water sensor or flow meter,how we observe the water level, f any other equipment are in market ?

952


Iin ESP why positive is grounded ? why not negative ?

1376






What is a commutator?

158


what is dry and wet frequency withstand voltage? why & where it is used??

1196


What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.

1324


at meter room 50 hrc switch installed,but there are not get earthing proper,so what happen?and 11kv transformer out put going in to hrc main 400a three nog each? so earthing is require for all switch? (some customer made earthing at there home.)

1035


What is slope...? Explain slope 1 and slope 2...?

554


In which working principal temperature transmitter work.explain in detailed.

1332


Why PT voltages are measured with respect to ground? What do u mean by voltage or current polarized.

1372


I have 4 busbar of 1000 ampere. we use 4 busbar to make 4000 ampere in one phase.my problem is that when we applied 60% load on that then busbar produced high noise.what is the reason of that and how can i minimize that noise.

859


What is Tachometer used to measure?

221


What are all present producing cost of Per KWH of various Fuel?

1607