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,

2044

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 3202

difference between converter and invertor

2 5375

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

1917

What is the physical significant of power factor?

Cooper,

1883

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

NTPC,

1 3579

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

Orient,

1 4842

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

1 3927

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

IESCO,

1805

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 6401

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

KSEB,

2 6953

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 5806

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 4397

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Un-Answered Questions { Electrical Engineering }

HOW WE CAN REDUCE THE CIRCUIT COMPLEX OF STAR-DELTA STARTER .BECAUSE NOW WE USING ONE TIMER RELAY & THREE CONTACTOR FOR MAIN,STAR & DELTA ?IF ANY IDEAS PLZ POST.THANK U

2452

what is automatic voltage regulator?we can control the vlotage by using fuzzy controller in matlab?why we go for fuzzy?

1925

if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

1870

state basic meaning of 'INDUSTIAL AUTOMATION'?

1869

Give the expression for the frequency of oscillations in an op-amp sine wave oscillator?

1064

What is meant by reset level of the relay?

1162

What is the difference between DOL starter and star delta starter

1086

how to find the voltage's of a transmission line plzz help with pictures i am not able to understand

1314

What are operating procudures & Safety precautions to be observed while operating OLTC in manual mode ?

1900

will 1050kva DG set withstand for back charge of 16MVA transformer

1814

What is the RME and explain the full form and what is the RME work?

2780

what is the difference between fault current ant short circuit current?

2668

Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.

2158

In case of HV test on medium voltage cables, BS is asking for 4 U0 where as IEC is asking for 3.5 U0. Can any one advise me how this 3.5 times or 4 times U0 is derived?

1658

What is the use of bundle conductors?

1121

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