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Electrical Engineering Interview Questions
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we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer

 1286

if There is Short circuit in Power Transformer, what will happened to Buchholz Relay.?? How Buchholz Relay will respond.??

 2 3277

how to find total current when kva is 30.4 given ? should we use root 3 (1.732) in the formula?

 2 3168

why we use 11 kv 22 kv and so on ?

Air Force,

1 4124

what do you mean by partial discharge in cable

 1 2539

how much current capacity of 300 sq. mm cable (4 core aluminium) and 150 sq. mm cable ( 4 core aluminium)

Bhel, RR Kabel,

3 27420

how much current capacity 250 amp. mccb please tell me about whats are the reasons to trip 2 or 3 times in a night. and what are the steps to short out this problem

Havells,

1 4435

What is the difference between power,voltage,current? and with example

 3 4064

How to calculate the copper in HT motors if KW, RPM & Voltage is given

Control Dynamics, NTPC,

2574

Can you any explain about active,reactive and apparent power in power system with example.

 1 2052

HOW TO SET THE EARTH FAULT SETTINGS IN ACB????????????

General Electric,

1669

In UPS, battery connections if parallel connection given, what will happen?

 2 3702

Why earthing done?

CBRE,

1 4434

What is a fuse? How does it work? What are materials used?

 1515

3) How earthing is done? How it measured? Write the method for earthing? How the earth resistance is kept low?

Innovative Energy,

1 4200

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Un-Answered Questions { Electrical Engineering }

what is the purpose of using filters in a protective relaying scheme?

1747

draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words

22108

what kelvin's law ?

1591

What is main cause of cable's terminal point burned in Lug on high temperature although lug and cable selection is ok as per stantard and also tightness is ok as per situation. so please take in deep and tell correct answer thanku.

7361

What is the necessary condition for stability.

717




how many joints are allowed in underground HT cable of 1 KM

1349

how much winding resistance of 0.75kw to 12.5kw 3ph sqwiralcage induction motor?

2438

why T/F winding temp measurement cts are odd secondary current ie,109A/1.2A/1.4A?

1358

what is meant by 2 within a star in a voltmeter dial?

1496

how to calculate the fault in substation

1699

wheather the size of windings in motor and generator are the same

1497

number of I/O devices in siemense plc

1628

Dear All, I am new in construction company , my boss ask a question at time of interview , If we have 60MW generation and Single Power Transformer step-up we have. if CMR 50/60MVA , ONAN, ONAF respectively , is it sufficient or not ? for that much power to transfer,

1202

Explain The Application Of Storage Batteries?

677

what are the assumptions made in swineburne's test?

1678

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