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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Why we use ups battery and dsdb battery in thermal power plant

MDeC,

2046

I had finished D.E.E.E at 2004,I wish to take C license.I am working pvt company HT supply but my professional certificate was missing.I have diploma & course completed certificate.without professinel may I got c license?.pls guide me.

OEG,

1 3209

difference between converter and invertor

2 5375

Can I use star delta connected induction motor for dual supply voltage?

1918

What is the physical significant of power factor?

Cooper,

1884

what is the significant for using two types of voltage(line voltage & phase voltage)

NTPC,

1 3581

How to calculate the cross section area for a 350 m cable, motor power is 26 kw???

Orient,

1 4845

what happens when a dc shunt motor fed with an alternating suppy ?

1 3929

What is the formula to calculate distribution transformer De-rating on iron losses basis

IESCO,

1807

Dear All, Can anybody please tell me which value(saturated or unsaturated) of sub-transient reactance(Xd") we take for the calculation of fault current of the system?

2 6403

Petroleum jelly is applied to the terminals of the lead acid battery is to prevent?

KSEB,

2 6957

In a Capacitor the electric charge is stored in:

TELK Transformers And Electricals Kerala Limited,

2 5230

Rated moter voltage and frequency is 380volt 60 hz but moter is running at 380votac 50hz is this harmful for moter winding

Infosys,

1 5808

what happen if the battery is charged by more than one source ,for ex: connecting data cable to laptop & charger pin to source supply ?

2 4527

When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 4403

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Un-Answered Questions { Electrical Engineering }

Draw a SLD of HT distribution EB grid up to users Transformer?

6171

PLZ EXPLIN ABOUT CLASS PS CLASS CT .WHY THEY R DESINED AND FOR WHAT PURPOSE?WHY OTHER CT CANT BE USED AS PS CLASS CT? EXPLAIN IN SIMPLE LAUNGAGE IF POSSIBLE PLZ GIVE CIRCIT DIAGRAM?EMAIL-RAJ_SINGH_0376@SIFY.COM

2222

what is model question rrb junior engineer electrical gr.II

1905

when will be the iocl interview results ifaced the interview on september 8 th

2131

what is servo motor and how to work it.

1873

i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance

2574

hi frnds...pls send me aptransco previous papers .....pls..pls,,,(madhar.rocking@gmail.com)and suggest me some websites

2102

Is it required to use Automatic transfer Switch in L&T panel board if we use AMF panel with DG set? How the single line diagram will be? Please forward the material to sreenu_207@yahoo.co.in

4678

what is the series parallel connection of capacitors? and how can we use these application in three phase motors for controlling torque?

2063

What is the problem of internal failure in ship engine telegraph system norcontrol?

2353

What is a system?

1151

If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?

2007

how to select overload-relay for perticular motor 1.for D.O.L. starter 2. for Star-delta starter ????

2796

What is the one main difference between ups & inverter ? And electrical engineering & electronics engineering ?

1104

What will be the current drawn by HT motor, if low voltage is applied.. any formula to calculate the LT amps of HT motor.?

1415

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