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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 3454

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 1508

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 2119

What is the difference between acs 550 & acs 850

Madhucon,

5137

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

1149

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

2 2888

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

1305

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 1582

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 1764

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

2718

What is power factor?

L&T,

3 5595

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

1246

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

CP,

1 25851

how freewheeling diode improves the powerfactor

4561

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

BFL,

1481


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Un-Answered Questions { Electrical Engineering }

can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?

730


Hi Everyone ! My Name is Hakim ullah khan please i need formula of Cable Rating because i want to calculate by self without check any Table Chart... Thank you.....

1092


Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet

1907


can anyone please help me to find the rupturing or breaking capacity in KA of circuit breaker (MCCB,VCB,ACB etc) of HT and LT side of a distribution transformer...please help with detailed step by step answer...thank you

1400


what is the VA(Volt-amphere)? define with calculation?

517






WHAT IS THE MEANING OG (li = 7 In)

1281


In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)

10368


How will A Medium voltage circuit breaker(11 kV voltage level) operate under short circuit fault condition whether It is having short circuit release like Low voltage circuit breaker or relay should be given?

1261


how to test reverse power trip?

3508


what is the grounding Calculation formula? spouse i want to provide grounding to 3phase 18kw motor or i want to provide ground to 3phase 10kva dry type transformere or you give me any exemple...... Thanks.

1299


Explain the working of any one cutting machine

506


How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?

1247


write a c++ code that receives an integer number and display the sum of the number and its revers integer?

1412


what is the function of gss in the dg set.

1264


what is the differences between microprocessor and general purpose computer

1474