Electrical Engineering Interview Questions
Questions Answers Views Company eMail

where to use CT and PT?

Reliance, CEB,

4 46520

how to use single phase supply for a three phase equipement.

756

which is dangerous AC or DC?

10 5884




what is diffrential relay used in generator plz give brief explanation

4 3027

what is reverse power relay brief explanation and in b/w where it is connected

672

which connection is there in a rotor of the motor

HAL, All Trades Electrical,

2 2495

We wish to test 60 Hz systems from a 50 Hz supply. To acheive frequency conversion, we use a VFD. The VFD powers 40 kVA transformer, which has motor and non-motor loads on it. Will the transformer work?

Suzlon,

2 3463

Why SF6,VCB,Oil Ckt Breakers are use in HT Side need brief information ?

5 12747




what is the form factor of DC?

6 3656

is there any phase difference occurs while primary and secondary side mutual induction occurs?

605

what happens when series resonance occurs?

568

what happens when parallel resonance occurs?

2 2313

what is LOS(line of sight)?

1 2174

what is VSWR?

1 3016

what is servomechanism?

1 4235


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Un-Answered Questions { Electrical Engineering }

i am completed in B.E(Electrical and Electronics Engineering) with 8 months experience in Quality Control Engineer at Bharathi Industries,Coimbatore.

620


why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?

1442


Why a tesa lamp is glow between two phase?

653


IN electrical field, WHAT ALL THINGS THE CUSTOMER WILL ASK WHILE ORDERING FOR LT PANEL (ALL TYPES OF LOW TENSION PANEL)

642


Single phase and threephase power calculation

805






Please give me a erda placement paper

401


Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............

594


what is electrical machines

1713


What is the difference between AC and DC injection methods for rotor earth fault protection

802


EXPLAIN THE ESSENTIAL FACTORS WHICH INFLUENCES THE CHOICE OF SITE FOR A HYDRO ELECTRIC POWER PLANT

591


Please provided formula for calculate the cable size from step up transformer to M.V panel, run overhead aluminum cables, total load is 5mega watt, total length 900 feet.

461


if main CT is of ratio 50/5, and meter CT is -/5 what will be overall multiplying factor of meter.PT is 11000/110 .

335


control & auxilary circuits used for circuir breakers

672


Can a generator runs after getting 1st stator earth fault.

200


why ct ,cvt should be stored in a vertical position?

950