Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how can we chack a capacitor in acircuit

2 2948

how can we chacke adiod in a circuit

2 2308

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

Reliance,

1 3677




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,

1019

what is power factor ?

KSEB,

12 9864

difference between ac and dc generators

4 5347

name 3 measuring instrument used in transformers

4 3668

what is JE exam?

811




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 6593

what is the disadvantage if earth is connected to neutral

6 6661

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

7 6515

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 18751

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 1273

whatis the difference between electrical and electronics?

11 8190

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 10241


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Un-Answered Questions { Electrical Engineering }

how do prepare ongc exam.how is it question model.i am electrical. which part covering in electrical.tell me

1059


WHAT IS THE PARTIAL DISCHARGE TEST?

758


what is difference between 5A and 100A CT constructional wise and operation?

1685


What is meant by vector group

1097


What is the formula to calculate the rating of power cable for three phase current.

788






how to calculate mf when meter and cTPT detail are given

485


What is the difference IN MCCB's between thermal magnetic and electronic tripping system ?

740


one electromagnet is called

613


The 3 phase Delta connection RB=440V, BY=350V,.......* is Line to Line voltage RY= ? And Formula....?

12


IF HT CAPACITOR IN ON POSITION IS THERE ANY LOSSES I.S I SQURE OCCURS IN THE SYSTEM

715


why three phase capacitor takes unbalanced current in capacitor bank?

194


An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm

939


what is doid

1313


why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%

617


how to select energy meter? have any calculation?

1418