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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 4705

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 2318

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 3132

What is the difference between acs 550 & acs 850

Madhucon,

5761

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

1761

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

2 4067

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

1874

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 2575

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 2682

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

3620

What is power factor?

L&T,

3 7786

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

1887

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

CP,

1 39470

how freewheeling diode improves the powerfactor

5373

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

BFL,

2200


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

if grounding is notdone at regular intervals for long distance transmission, will the load connected at distribution end receive voltage during negativehalf cycle of the sine wave?

1990


why 5kW motor becomes unbalance if its relay trip 1st time and its set value is 7.0 A

1963


what is the necessity of under ground cables ??

2048


WHAT ARE THE DISADTAGES OF SINGLE-WIRE-EARTH-RETURN SYSTEM USED FOR RURAL ELECTRIFICATION?

1944


why constant voltage transformer should be start without load? and if started then what will happen?

2003


If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.

2223


What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer

1776


how the works electronic energy meter?

2125


why does rotor rotets?

2579


what is effect of leading power facter on the system and billing

2272


Define non-touching loop.

1279


I FINISHED MY B.TECH IN EEE . I AM IN NEED OF A GOOD TRAINING INSTITUTE TO DO COURSES .. CAN ANYONE SUGGEST GOOD CENTRES IN TAMILNADU ,BANGALORE ,OTHER AREAS???????

1961


What we mean by vintage of an engine+Generator?

2090


What is the form name of 'c' license, I want to download in web

1858


what happens to the supply voltage if there is any change in frequency?

6360