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 3798

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 22607

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

ACC, Al-Jaber, Dubai Group, ECEC,

2 29074

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 18300

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 5611


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Un-Answered Questions { Electrical Engineering }

difference between power surge and switching transient

1518


What is the reason behind current flow(20 A) in amain earth cable of an SMDB? Is cuurent flow(45A etc) through a neutral cable acceptable?

1499


In cable sizing calculation (determining the max route length of cable) why we choose the shortest length between cable length of full load current Iflc & starting current Istart?

2767


In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)

10958


Please send 110 kv sb station full single line drawing(sld)

2053






What are the necessary solutions needed to be carried out on a malfunctioned earthing mechanism of a VACUUM CIRCUIT BREAKER.(TAMCO)

1529


is all the servo motors having brake?please specify which servo motors having brake for stop on position and which are not.

1309


For an induction motor wat is the loading/unloading cycle duration or interms of L/UL ratio/ percentage?

1582


Do closed loop systems require manual input?

656


While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

1448


what is the voltage regulation for unity and zero power factor?

1749


Explain cmrr?

681


Motor,transformers,capacitor tubelight etc....

1207


USE OF 8 WAY PAN ASSEMBLY

1488


How do you calculate the actual power consumption of an inductive load appliance. Say, a deep freezer of 200watts

1647