Electrical Engineering Interview Questions
Questions Answers Views Company eMail

dielectric strength of vacuum is greater than SF6 but for 132Kv uses sf6 breaker & for 33kV uses vaccum breaker why such a contradiction?

MSETCL Maharashtra State Electricity Transmission Co Ltd,

2 3906

I have lowered a submersible pump having 100 LPM discharge & 130 Mts. Head, 15 HP rating on borewell. After lowering 108 Meters, It is taking 39 amps & blowing the fuse. Can someone put light what is the cause behind it ?

1 1729

I AM COMPLETED DIPLOMA IN E.E.E. AS WELL AS B.TECH IN ANDHARPRADESH.. HOW I THE Certificate of competency as Electrical Supervisor.

1 2422

What is the difference between acs 550 & acs 850

Madhucon,

5357

How to find ampere on ht side for selection of cable size ???

1324

1.Why sinle phase motor is not self starting 2.working principle of alternator 4.list out electrical formula

2 3214

What is the capacitance values of 132,220,400 & 765 kV current transformer

1449

Sir,I have finished my B.E in the Stream of EEE.How Can I get C license for Electrical???Please Tell me the way...My mail ID is praba1003105@gmail.com Cell:7402474123

1 1867

Please let me know when replacing electromechanical Relays for protection of generators with sr489 multilin Relay, then there is no need to use 86 master trip relay Too. I am wondering this multilin relay has no contact to Stop breaker reclosing as 86 does

Neucel,

1 1991

How do I calculate/select Droop CT ratio for various capacity of generators?

3043

What is power factor?

L&T,

3 6146

how is the incoming cable size calculated for a given current rating of a panel??

1420

what's the different between ELCB, ELR and ELS?

CP,

1 31930

how freewheeling diode improves the powerfactor

4837

What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?

BFL,

1692


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Un-Answered Questions { Electrical Engineering }

Why strting torqe high in inducation motor?

1629


Why hydropower stations are preferred solution for meeting peak loads in grids?

566


what is the difference between 4pole & 6pole DC Motors & give advantage ?

1412


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

1449


Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

1539






WHAT ARE THE CHARACTERISTICS OF AN VOLTAG AMPLIFIER

1588


What safety precaution are to be taken for avoiding electric hazards ?

1422


Explain in details how you would react to an unexpected incident when your supervisor or manager is not around to give instructions?

7298


how to set relay setting? and example calculation...

1510


how to calculate mf when meter and cTPT detail are given

1346


how technical is calculated in 11kv line and lt line

1443


What are the main advantages of bode plot?

682


Why MCCB is Getting tripped sometimes when there is no load in the Midnight ?

1377


what is the voltage between earth & neutral in 3 phase electrical connection.

1448


How to improve fuel cell in a distribution system?

1515