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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What are the special cables required for explosion proof wiring?

2255

Can we use generator transformer as step down transformer? How?

3 3247

what are the parameters plays a major role in Potential transformer Burden calculation??

ABB,

1174

Whay you want to change your job.

1 2217

EXPLAIN WORKING PRINCIPLE OF ALTERNATOR & MOTORS.

L&T,

2 9667

What is the latest generation of circuit breakers called?

Focus, Oil India,

2 6277

In case you don't have coal and salt for earthing, how can you achieve good temporary earthing?

Focus Energy, NHPC, ONGC,

1 18317

1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

TVS,

1 3195

Why we are using Isolation Power Transformer inplace of commercial power transformer? What's the difference between them?

UPCL,

1097

In our plant we are having 6.6 v motor wih MV drive running frm last two years.udenly at some speed motor getting vey vibrations what is the problem

ITC Infotech,

2 2484

1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?

TATA,

3713

what is different between relay and plc?

3 2990

what is REF relay?

1 2463

what is pilot wire protection? wer is it using?

1 2409

what is current check gurd relay?

MRF,

1474


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Un-Answered Questions { Electrical Engineering }

what are the industrail measures to over ferranti effect? how would the ferranti effect the power system if those remedial mearsure arent taken? how often does this effect occurs in real power system?

1279


Draw a circuit diagram in which if button is open we can use socket and bulb as a series test circit and if button is close than simple we can use socket as any load purpose.

998


what is buffer resistance starter.?.What is the working principle and where it is used..?

1090


WHY THE COLOR OF OUTDOOR TRANSFORMER IS BLUE ONLY???

1168


What is real time power factor control panel(RTPFC)?

3281






HOW TO TEST A LIGHTENING ARREST ER ?

1260


why using transformer and thyristor switch in 3 phase apfc panel

1863


Where servomechanism is used?

205


can we synchronize star system generators with delta system transmission line ? and how ?

1882


What is meant by system?

179


operation of diesel generator

1090


WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION

1059


In parallel operation time both NGR’s close or not close if both close what will happen

2806


I'm looking for a mnaual set for a Teradyne J750. Softcopy would be preferred but I'll take what I can get.

1245


what is differentila pilot supervision in the incomer control panel in the power station?

1113