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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the rating of HT SUBSTATION and LT SUBSTATION?

NTPC, Sail,

11 53095

Assume a condition such that two motors of rating 6.6kv,415v are connected to blower,so tell me which motor draw large current give appropriate reason?

NTPC, Student,

2 6675

What are eddy current and define rms value?

NTPC,

4 9688

Transformer's core is made up of which material and why so?

ABB, NTPC,

10 29104

Draw the line diagram of diffretial relay connected to transformer?

NTPC,

1963

Name different types of fault and which instrument is used to measures earth,short,open cicuit fault?

NTPC, Vijai Electricals,

6 11448

AC current is flowing in a wire in your home how can you measure it(name of the instrument)

NTPC, TCS,

24 21332

How does and Earth Fault Relay operates in DG set control panel?

Cummins, University,

1 5884

1> what r different types of fault in cables? How will u locate and test these faults? 2> why earth wire is provided on top throughout the transmission line. why not only on towers? How much area it can protect? 3> what r different types of transmission losses? How power loss can be minimized? 4> what is the % of power loss on transmission lines?

IOCL,

3 9367

what type of relays used in transformers?

APTransco, BSNL,

24 59860

What will be the capcity of 3 phase DG set require for 25 KVA single phase lighting load?

Supernova,

7 15208

MCB is used for high rating &MCB is used for lower rating.What is technical difference between ACB & MCB?

 7 10245

what is MUSS?

HP,

1 12139

what is phase and neutral.

HP, Voltech,

16 61111

what factors to needed while selecting a MCB and MCCB

 3 9280

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Un-Answered Questions { Electrical Engineering }

State any two nuclear power stations in India, with their generating capacity.

1382

Trafo ratio is 11kV/6.6kv,Vector group is YND11. What will be the effect if secondary is used for earthed system.

3341

What will be the size of copper cable (each for 3 phase and 1 neutral) from Service connection Kit-Kat to Panel Board (i.e. to main switch) for a 6 pole 3-phase AC induction motor of 200 H.P. capacity? Amp-255 A, Frequency:- 1450 rpm.

1493

limitation of conductor height on ground when we consider EMC

1488

71ohm,111ohm,95ohm,179ohm in calculate the total ohm in series circuit

1232




Explain what is use of lockout relay in ht voltage?

668

please send me the previous year's question papers of jindal GET exams

5506

how to control dc motor?

1410

What is sink and source?

662

I'm looking for a softcopy manual set for a Credence ASL- 3000. Anyone know where I can get it?

1625

what is the significance of cabability curve of alternator

1793

What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?

1756

What is the difference between Encoder and Resolver?

2879

How much minimum insulation required between 11kv/3.3kv transformer windings?

1968

how to Select Lighting arrester? What r the parameters to be considered for the selection of Lighting arrester ?

1189

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