Electrical Engineering Interview Questions

How to decide DO set rating of Transformer?

310

WHat is the requirement of installing FAST ACTING EARTH SWITCH in GIS and how is that integrated with protection system. How and when does it operate?

402

How to Preparation of online test

312

what is mean by D.O. in distribution line poles?

242

How to calculate ht side cable of 630 kva oil cooled outdoor transformer?

307

The shot circuit in any winding of transformer result? Explain

89

What is difference between safe PLC and normal PLC

180

What types of question are done for diploma students in aptitude test

271

which cable is used for 15 Hp monoblock pump 3phase and service wire Distance is 210 feet please tell me cable size Armaured

292

What is Meter MF if External CT Ratio is 150/1 , PT Ratio is 132/110 Meter CT Ratio is 200/1 & Meter PT Ratio is 110/1

377

What is the function of a neutral reactor.

463

How to assume answer to electrical questions

264

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

253

how to find Harmonics and types as per the equipemnts

11

I have a CT meter with ratio 60/5. The meter reading of previous month was 3290.49 and that of current month was 3797.26. How many chargeable units as per normal meter should be my reading.

53

Un-Answered Questions { Electrical Engineering }

What Is Sampling?

4

Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

2688

what is PWM in IGBT and how it works for drive.?

536

we have an energy meter in a capacitor bank panel, So should we consider it's readings as energy consumption on daily basis. (when capacitor bank doesn't have any energy losses)

1257

What is the range of the stator resistance of 3 phase induction motor?

804

anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?

763

how to select energy meter? have any calculation?

1618

Maintenance of transformer???

711

hwat type of motor is used in thermal gas turbine hydro nuclear power plants and why

827

what is formula for calculate thermal overload in new numiricalrelay( not in bimetal relay)?

1071

how to decide no of electrodes for 1600A LT Main incomer panel

536

how circuit breaker work.. what is the operations taking place inside a circuit breaker when an overcurrent occurs... is it similar to fuse?

914

In our factory so many iron pillors are exists for supporting the shed/Hangar. If do more no of earthings at one piller instead of doing more earth pits in many locations and running earth strip around the hanger, I can save the money. Please suggest this method is acceptable as per Is specifications though the Earth resitance of the farthest piller is with in the limits as per IS specifications.

989

Why does the speed regulating system adopting I controller have no steady-state error? In this single closed-loop speed regulating system, when the input of the I controller Un=0, what is the output voltage of the regulator? What factors do the output voltage depend on?

771

WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?

673