Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what will happen if the secondary of current transformer kept open....

11 10608

what will happen if the secondary of current transformer kept open....


16 21459

when giving a supply to wounded coil it will get magnetised, but the same is not if it is not wounded on a core..and it is getiing short....why.......

3 2548

how to select the power contactor in Diffrent AC motors.


6 19450

How much RPM in Turbocharger in Diesel engine.

MAHINDRA, Greaves,

9 32422

What is the maximum size(MVA)of power transformer available in the India/world?


12 14925

What is the dimension of A4 sheet in mm?


6 7155

What is meant by Reactor in power system and what are the uses?


11 38664

Can anybody tell me how to calculate(formula) earth flat size(for copper and aluminium).

3 3986

why surge suppressor in vaccum circuit breaker and it is only in motor feeder why not in tranformer feeder?no surge suppresor in ocb in motor feeder?


1 2062

what is the difference between megger and earth tester?

Ashok Leyland, IOCL, RRL,

28 65467

Why we use the D-curve MCBs in critical power distrubution.


4 4172

What is mean by INRUSH CURRENT?

8 9789

I want the details about BHEL company examination.Can anyone able to help me please.


What is the use of core in the transformer?

19 36038

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Un-Answered Questions { Electrical Engineering }

how work a harmonics filter(L-C combition).


Does outdoor isolator loose connection cause short circuit current in that circuit? if yes then how ??


Dear all: Recently we got a question about Interface between PMS and SAP-PM.once we got a update message from PMS.we should set the deletional flag for functional location in SAP system.Is there any FM or BAPI to use?There are only functional location create and change provided by SAP. Best regards!


is there any role of power factor with frequency variation? and how we can manage the frequency variation?


Actuality I have at home electrical panel with 220v 50hz, and I want to converter from there to 110v 60hz, to wiring on the half of my house. Also I like to keep another half of my house with the original 220v 50hz. What is the best and safety way to do?


We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.


how withstand of hi-pot test outputs of transformer wire 2.5mm


What is rms value wher it is used??????????


Q) Write VBscript code along with QTPscript code in QTP tool for below scenario 1. Launch yahoo site(i know) 2. Do loogin(i know) 3.Click inbox link(i know) 4.Go to every page of mail box and count no.of read mails and no.of unread mails(i know) 5.Store page numbers, read mail count and unread mail count in a new excel file sheet 6.Create 10 types of graphs on that data 7.Do logout and close site(i know) 8.Save new excel files with graph


How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.


Is there any abbrevation for STUB in Stub bus protection




The coils having selfinductancs 10mh and15mh,effective inductance 40mh when connected in series aiding. what will be the equivalent inductance if we connect them in series opposing?


Would you recommend to replace all oil filled cables with xlpe cable for hv transmission with the current technolgy for xlpe cable?


why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points