Electrical Engineering Interview Questions
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How to calculate the heat load for a electrical room


what is the difference in MCB, MCCB, RCCB, ELCB, & MPCB (motor protection circuit bracker)

Siemens, Lupin, L&T, Afcons, CIHSR, DCS, IOCL, Bhel,

12 172877

How can we calculate the rating of capacitor bank to be connected for a particular load(ex.100kw)to improve the power factor from 0.8 to 0.9?


4 14920

when neutral will carry the current?what could be the magnitude?


7 9186

if we use fuse in neutral what will happen?


9 12398

What is Ten Delta Test ?


8 24756

What is the importance of Form B to state Electricity Boards?

1 2271

what is the importance of Partial Dischage test for Electrical Equipments


The potential difference between a phase and neutral is 230v , but the potential difference between two phases is 400v. why?


4 9864

Suppose the incoming power is 11 kw, but the load require only 8 kw means how can we save or use the excess power?

3 2811

In 90 kva alternator that produce the output voltage is 115(p-n),200(p-p) at 1500 rpms means what ampere it produced ?


What is the difference between INVERTER and UPS?

7 9254

what is the use of earthing ?

Electrical Tech,

8 27285

how we protect the motor & what are the components required for that ?

2 2547

Why 60Hz frequency is used in America what are all the benifits?

5 6186

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Un-Answered Questions { Electrical Engineering }

What is the de rating factor of cable? What is the importance of the de rating factor in cable selection?


1. Design a counter which counts 0, 4, 8, 2, 6, and repeats using: 1.a using JK flip flops 1.b using T flip flops 1.c using D flip flops


How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?


Cables Construction hi friends, 0.6/1/1.2 kV LV , DC and Control cables are concentric copper conductor what does its means and what is the use of concentric copper conductor,and are this with copper tape shield or copper screening, ? thanks


i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.


how to carried out DAR test in 11 KV Alternator ?


What happens when ac supply is given as excitation voltage instead of dc supply


what is the voltage between earth to neutral in lift.


why single CT used in DOL starter power circuit?


How can get elongation of 2 k.G aluminium, if elongated aluminium dia is 2.5 mm?


how copper and aluminium wires or cables are choose for current rating? please provide copper and aluminium wire selection chart for different current rating ?


what is the difference between ups & inverter


which book to refer in electrical engineering for iocl exam & which book for general english.


Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.


in india per day how much power is generated including all power station