Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how can we chack a capacitor in acircuit

2 3011

how can we chacke adiod in a circuit

2 2369

what are the different pre- commissioning tests performed on distribution transformer, power cable and switchgear?????

Reliance,

1 3739




what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?

Reliance,

1053

what is power factor ?

KSEB,

12 10091

difference between ac and dc generators

4 5428

name 3 measuring instrument used in transformers

4 3752

what is JE exam?

842




I am an electrical power engineer and arranged power system for a data center, I installed MCB, ELCB and erthing system TN-C-S. But some times several ELCBs Disconnect circuits at the same time! what may be the reason? (the ELCBs are 25A ,30mA)

9 6697

what is the disadvantage if earth is connected to neutral

6 6871

If we connect the capacitor banks for DG set for maintainig the power factor, it will effect to alternator windings??????????

7 6664

How can calculate the efficency of the rectifier. input 240V AC, current 5 amps,P.F 0.98, Output is 54 V DC,62.6 A.

10 19104

In case of 11kV dual delta bank what are the recommended protections with specific CT / VT requirements? The capacitor bank is to be connected to the main 11kV switchgear from where the H.V.Motors and auxiliary 440V loads.

1 1321

whatis the difference between electrical and electronics?

11 8364

Hai I have 2500KVA,Transformer,13.8KV/380.DELTA/STAR.How much load that I can take interms of current?How can I calculate also when I have loads in KW?

L&T,

10 10425


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Un-Answered Questions { Electrical Engineering }

Where can I get CPWD electrical specifications & Shedule of rates? Please help me

972


Why current shoots up in the secondary on the knee point voltage during saturation test of CT? How core saturation effects the secondary current (while the primary side is open)? What the logic behind this?

774


how to calculate mf when meter and cTPT detail are given

525


what is meant by class 1 E in electrical power supply?

754


what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?

818






How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?

622


LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?

831


I need a formula to calculate the size of cable as per load but in the terms of length. Please Reply me as i search lot of sites but i did not get the answer.

778


Instrument connected to a single phase supply

392


How to calculate earth wire load by formula

1187


hi i have applied for lic of india south cenrtal zonal ,hyd. i didnt get hall ticket till now.let me know how can i get form internet

709


why the neutral line is not giving shock to us if we touch it ?

562


how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?

709


what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field

689


What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.

546