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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

in elevator industries , how to calculate the required KVA for the elevator (elevator spec- 40A module , motor of 13.5KW, 20A)

DLF, Tata Steel Limited,

1 9201

why the stator is not laminated in DC machines?

4 12742

I am abt to give IOCL intrv.Plz sir guide me for IOCL intrvw (Electrical).Which subject to be consider. questions are generally asked from which subject.Plz help me out.

IOCL,

1102

if we convert kw into kva,which one formula use by us,pls tell me?

ABB, AEC, BGH,

19 18489

if we convert watt into kva,which one formula use by us,pls tell me?

ABB,

16 14604

if we convert Ampers into kva,which one formula use by us,pls tell me?

ABB,

10 8804

if we convert kw into Ampers,which one formula use by us,pls tell me?

ABB, Essar,

9 8876

if we convert kva into Ampers,which one formula use by us,pls tell me?

ABB,

7 7394

if we convert ampers into kw,which one formula use by us,pls tell me?

ABB,

11 13184

How to decide and select the different earthing wire size for the different types of earthing

Suzlon,

1398

What is the safety factor is to be consider while selecting the switchgear and protection for electrical system

1 3292

Input power is 380 - 450 V but with 45 - 55 Hz frequency - desired output is 415 V and 50hz with 1% variation permissible. CVT / Servo dont stabilize the Frequency - what is best solution??

IOCL,

7 6416

What is transformer saturation?

1 2220

every motors written in name plate IP 55 what is this?

2 24380

what is general test conduted by transformer

Wipro,

8 9649


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Un-Answered Questions { Electrical Engineering }

what ispositive, negative, zero sequence impedence?

1111


Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.

1142


What is cut-off rate?

209


How does an induction motor start?

263


what is acceptance test in electrical engineering.

1284






How PSV sizing being done

1296


what is meant by k-rating in isolation transformer?what is k9, k14 stands for?

1613


In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.

796


Earth is a conductor or load?then ammeter connect to 3- phase supply,it shows the measurents or not?

1240


which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor?

1236


WHY TERTIARY OF POWER TRANSFORMERS IS LOADED WITH EQUIPMENTS LIKE CT,PT,ISOLATOR AND CB

1017


How to use computer cpu ups use for home inverter circuit board

868


Classify driling machines.

201


how to find the capacitance value of the motor while running??

974


How to calculate fault level of 11 KV system

953