Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

how to extend relay operating timing in 24V dc relay card (without using Timer )

2005

what is meant by PU value ? anyone can you explain briefly to me ?

3 5430

need help, please can someone tell me how can i calculate the main breaker and branches breakers to distribution panels (MDB) depending on the load ampere .. i really need it but can't find any site >>

3 4646

What is maximum permissible length of cable from transformer (33kV/0.433kV) HT side to HT panel which contain VCB? In which standard i shall get this information.

MSEB,

6 16574

Which motor has more efficiency ;Synchoronous or Induction motor ?

TATA,

4 8700

What happens when the power factor is leading and its disadvantages.

1 3872

What is the basic difference between 90% stator earth fault and 100% stator earth fault, and its phenmenona?

Reliance,

4 19724

purpose of breaker contact multiplication relay?

ABB,

5 25708

if two heater of rating 1KW,200v are connected in series 100v supply what will be the power taken

1 4685

write a program that prints prime numbers from 1-20 in digonal form

2002

What will be done if we open the secondary of CT on load??

Engro,

4 7104

what is the transiant condition in alternator? and how it can be prevanted?

2097

i alternator which of genarator used for excitor the what is reason?

3 4833

Hi.I want to ask how to calculate contactor rating current? for example I have 460 V , 100 A (induction motor) calculate contactor rating current?

2 4487

I want to know what must the CT ratio be on a load of 300A is a 3PH nutral to earh installation?

4 5983

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Un-Answered Questions { Electrical Engineering }

Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

2139

i need previous entrence exam papers of nhpc.

2845

Define liftable weight of a transformer? Does the total weight of transformer include oil weight?

2495

How to check the LM324 Ic

8481

why is using sensor?what is differece between photoelectric and proxmitty?

2004

What is superposition theorem?

1187

What is the reason of polyphase induction motor tripping suddenly on high current during running at 70% laod? Motor IR , winding resistance & inductance balance. Motor no load current is balance and ok as per mgfr. data.

2412

Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?

1658

In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?

2293

if we have a industrial load of 400 kilowatts with 415 volt AC then how much total harmonic distortion (thd%) should be acceptable for steady power system.

1981

How the PF control while running DG set with load

2180

Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?

2195

How to calculate the no of Ceiling fan (1200mm sweep) per unit area?

2079

I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- maitheerainbow@gmail.com

1948

iam working in power plant. In hot places tube lights are glowing at the end portion only. what is the reason for that?

1926

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