Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is Procedure the procedure to select CT's & PT's in 66kV and above substation?

Infotech, Vijai Electricals,

3 10205

what is extra low voltage system

3 8923

WHY EXCITATION OF SYNCHRONOUS MACHINE IS DC NOT AC

NTPC,

8 13758

Why (In India) we preferably go for +-30 deg connection of transformer? what are the advantages in this connection?

2 3634

operation of diesel generator

1462

What is Antipumping Function & If we have C.T how we find the Ratio ?

1451

How to Convert Gen KW to H.T amps ?

2 6011

at which voltage level arcing ground is occurs ??????????

TATA,

1499

why test lamp didn't glow across 500v megger?

Aurobindo,

4 6058

why we are testing cables with DC supply not with AC supply?

Aurobindo, DEWA, L&T,

9 27481

What is the Difference Between resistance and resistivity?

Sun Pharma,

2 6133

what is the different between surgearrester and lighting arrester

HPCL,

4 6505

why exterrnal C.T. protection is used even though ACB& VCB is having inbuild C.T. protection?

2 3979

what is the different bitween ETP & WTP

Square Pharma,

1 9064

According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

3591


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Un-Answered Questions { Electrical Engineering }

Differentiate between kirchhoff’s first law and kirchhoff’s second law?

541


why transmission is only 3 phase and not 2 or 4 or poly phases

1634


What is hipot test procedure?

876


what is the condition for YnD11

1993


Why increase in current leads to increase in conductor temperature?

585






71ohm,111ohm,95ohm,179ohm in calculate the total ohm in series circuit

1180


Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.

2455


description with working of all parts of a Diesel generator???????

1906


RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

1540


dg earth connect only in the amf panel or not why

1522


If VFD is On but no starting commond on it. so how many outpout voltages of VFD

594


Fantio of tranformer

1645


working principles of cf lamp,incandescentlamp and f lamp?

1738


A Question Like A Wire Is Wound Whose Resistance Is Some 132. 44647 Ohms. If A Voltage Of 30 mv, 296 Ma Current Is Applied To It What Is The Resistance.

564


Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?

1557