Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is ferranti effect?

9 13155

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

1509

How earth resistance reduses by pouring water coal and salt?

4 22245

what is the long transmission lines

2 3797

transmisancy eficencey calculation formula

1 3246

what is PI value and its significance for insulation testing?

3 25072

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

2 8497

What is stub protection is all about?

1 5830

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

Dubai Group, Saudi Delta Groups, Savitha Electricals,

14 60501

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 22606

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

ACC, Al-Jaber, Dubai Group, ECEC,

2 29073

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 6503

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 18299

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

3 3182

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

HSL,

1 5610


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Un-Answered Questions { Electrical Engineering }

can i connect the two phases of scott connected transformer,if not why?

1505


What are the applications of the electric motors?

589


at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.

1171


WHY L-G FAULT IS MORE SEVERE IN TERMS OF RRRV?

2704


What is the ratio of true power to apparent power in an ac circuit?

680






when ac current flows thru d coil of a contactr,it energizes,magnetic field attracts d contact of the coil...nw wont dt ac current in d contct induce current back on to d coil thru mutual inductance leading to high currnt in d coil

1256


what is harmonics? what are the factors it will depend upon

1524


can any one suggest paper presentation topies for electrical engg?

1488


What is the breaking capacity of transformer and how can we calculate the breaking capacity of tranformer

1241


What is the effect of interchanging core(made of steel) and winding(made of copper) material in case of transformer? Give proper explanation in regard to different losses in transformer.

1421


What is 11 N1 and 12 N2 in single phase Transformer ?

1496


limitation of conductor height on ground when we consider EMC

1484


What is the power factor of an alternator at no load?

830


1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to reconfirm its base capacity.

1533


What is tan delta & PPM in transformer? and whats its IS value?

1587