Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what are the different type of transformers available in markets???

Atomic Energy Commission,

6 6556

what will happen if we use earthing inplace of neutral for domestic energy meter

Polyplex Corporation Limited,

5 7684

While elctrical load on DG,capacitor banks kept off why so? If capacitor banks on is their any effect DG?

IL&FS Infrastructure Leasing Financial Services,

4 11060

why do we use 3 single phase instead of one 3 phase?? though vee connection is its advantage but what is the hidden reason behind it??

2 4004

We have 420volts, Diesel gen-sets each 750kva 4nos. we are operating with bus bar duct having 10x150mm for each face 4nos. our question is what is the minimum gap required between each face? is there any satutory regulations?

Alliance One,

1 2763

how we have to calculate the short circuit current for 33/11kv 2mva, 7.5% Z, Transformer primary side breaker and secondary side breaker short circuit current for both sides?.

5 14066

what is the advantages of Lighting transformer?.. is it possible to reduce the power consumption ?.

Lucas TVS,

6 29302

transformers? power factor? machiences?

3 3989

how can u say about the line by looking at the tower ? {voltage rating of the line}

BARC, London,

3 5305

how inductance related to number of turns in a choke

3 4067

what is tan delta measurement?..... why that terminal is earthed.....?

Power Grid,

4 6765

Why only 1ph,2ph,3ph supplies are universally used?? Why not 4ph or 5ph??

4 7756

diffance between eletrical and eletronics?

3 4377

What is the difference between XLPE & FRLS cables? Is FRLS cables is a type of XLPE cable or both r different?

5 88856

Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.

1445


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Un-Answered Questions { Electrical Engineering }

What shall be the secondary output voltage if the primary winding of a 220/6V, 50 Hz transformer is energized by an 110V, 60 Hz supply?

838


Why AC current leads voltage in capacitor and how?

1589


How you give clearance to a spare feeder.

1196


How to perform a DC resistance test In Alternator and their proceduces?

1040


Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?

1366






H.t motor 6600 volt to same motor lt supply 440volt supply applyed to h.t motor to effect....

1446


What is hipot test procedure?

971


why the check zone and main zone are used for Busbar Protn. scheem?

1633


i have seen one 8.4 MW synchronous motor in a plant located in bellary it is fixed with brushless rotary rectifier ,anybody can explain its start up principle

1484


How to maintain ac plant?

1491


how braking & making capacity of circuit breaker is calculated?

1538


ELECTRICAL ENGINEER TEST IN FEWA ANY ONE HAVE KNOWLEDGE ABOUT THIS?????????

532


What are the different types of hydro schemes?

644


How to operate a ac chilar plant?

1935


if there are six generators (3 gas CATT, one Jenbacher o1 MW each, and two nos Diesel 01 no 01 mw other 0.65mw EDGs ( say), 3 CAtt gas set have identical pole pitch,01mw EDG and Jenbacher gas Set have different pole pitch, how their power connection can be done to connect a common bus bar during installation. in short, how different pole pitched generators power connection can be done to connect a common busbar system through generators incomer ACBs.

1095