Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is ferranti effect?

9 9151

what is the difference between online & offline caliberation of KWH meters. Can Digital meters be caliberated

725

How earth resistance reduses by pouring water coal and salt?

4 18210




what is the long transmission lines

2 2227

transmisancy eficencey calculation formula

1 1944

what is PI value and its significance for insulation testing?

3 21156

How the main bus bar rating of 400kV switchyard with one and half breaker scheme is calculated.

2 7070

What is stub protection is all about?

1 4623




WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SIZES??

Dubai Group, Savitha Electricals, Saudi Delta Groups,

14 51926

What is the thumb rule for calculating the P.F correction Capacitor?? Say for 100 hp motor how much micro farad Capacitor is needed .... Thumb rule so quick answer wanted

Bhel, Dubai Group,

9 14875

WHAT IS THE DIFFERENCE BETWEEN SHOP DRAWINGS/ DESIGN DRAWINGS AND AS BUILT DRAWINGS??

Dubai Group, ECEC, ACC, Al-Jaber,

2 25229

we hav seen in electric engine of trains only 1 wired slidng conecctn is there frm ovrhead line,howevr to complete a ckt in dc postv n negtv two conection has to b there...so where is tht negative is been connectd or where it is grounded...?

ABB,

5 4122

how to select short circuit current while selecting a MCCB? how to calculate current for a given KVA and KW load?

GE, PnU Engineering,

2 15166

in a three pin socket y the pin of earthng is longer n bigger...?

2 1567

What is the safety protection? Name the protections of Transformer?

HSL,

1 4167


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Un-Answered Questions { Electrical Engineering }

how can maintain the power factor and why and this is how do work tell us

778


Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.

2039


how to calculate earth fault relay current and CBCT ratio

4647


why all the feeders are designed in a particular manner ... is there any reason for that???

672


WHERE CAN I GET THE PREVIOUS QUESTION PAPERS OF Govt Polytechnic in deee 2nd year papers

1418






what are the advantage and dis-advantage of 3 phase 4 wire energy meter?

719


What is trip and closing coil in cb? Why need of them

189


Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?

766


What will be in Mahagenco Trade Test Exam? I want to know the same.

2363


how we provide neutral earth on synchronising panel as per electrical standards?

766


WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB

1118


any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

954


How much minimum insulation required between 11kv/3.3kv transformer windings?

1063


What is the loss of transformer of 220kv/11kv, 63/80 MVA and 18.05% impedance

741


How Can you do Maintenance of ACB of 2000Amperes

849