Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how to detect the presence of underground cable(while digging road)etc. -give the name of instrument


7 8288

how to measure the A.C flux .-instrument


8 5737

which subject is better to tell when hr asks the area of interest?..


if step down transformer step down the voltage,will current will also be proportional step up. If yes then how transformer handle such a large current?

4 5268

What is the meaning of Fault level rating?

Balrampur Chini Mill,

1 8355

Why semi-conducting insulation is used in XLPE cables?

1 3210

I have a 600VA UPS for computer only. It holds for 20minutes only. 1. Can it be upgraded for longer period.? 2. Can it be used for one ceiling fan and a tube light? If yes, how to upgrade?

11 28495

what is the knee point voltage ? what is differtial rela? what is impedance and % of impedane? what is the postive phase sequance ? negative phase sequane ? and zero sequance impedance ? what is sortcircuit calculaion? why take calculation? define stabilty test ? why? what sentivity test? define merz protection ? what is the burden ? class 5p10, accracy, metering ct take knee point voltage test thet time what heppan why dont take knee point test to metering ct?


how can we change the rotating direction of single phase AC induction motors?

L&T, Heubach Colour, MNM Jain Engineering College,

12 66528

why C T secondary are rating 5A generaly .

7 7693

why earth hole size is biggest in socket point.

5 6045

If DG runing time Neutral earth connection Dissconect what will be the effect in load and equipments.

Reliance, HP, GE,

3 5102

If DG runing time neutral is disconnected what will be the effect in Engine and Electricial panel.


2 3525

What is transformer break down voltage.And what is flash oil flash point.


1 3233

Why dc Supply used in Control circuit.


12 19658

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Un-Answered Questions { Electrical Engineering }

How do we arrive at selecting reactive capacitance value as 30% of h.p rating of motor?


what is strip power factor?


How to calculate the heat load for a electrical room


what efficiency at 70% loaded transformer


what is the profesional board for electrical engineer what is thepast and during construction for electrical engineering


what are the applications of transistors with low dc gain, high dc gain and medium dc gain( beta)?


Can clean earth cable be considered as low current cable


what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero


In how we connect watt meter for open & short circuit test of a single phase transformer.




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


How do we calculate the Out put voltage of generator, after the excitation is being given?


what are the advantages disadvantages of connecting high voltage block( 1:1 transformers) transformers between the turbo generators and busbars.


how can we change the polarity of Alternating current rapidly? how frequency of ac can be controlled and changed easily?


how to test the turn ratio of 3 phase transformer using volt meter shoe the curcit diagram.