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Electrical Engineering Interview Questions
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Why we use ups battery and dsdb battery in thermal power plant

MDeC,

1626

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 2585

difference between converter and invertor

 2 4363

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

 1502

What is the physical significant of power factor?

Cooper,

1480

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

NTPC,

1 2924

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

Orient,

1 4104

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

 1 3303

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

IESCO,

1341

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 5181

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

KSEB,

2 6068

In a Capacitor the electric charge is stored in:

TELK Transformers And Electricals Kerala Limited,

2 4059

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

Infosys,

1 5078

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 3698

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 3547

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Un-Answered Questions { Electrical Engineering }

Why we cant store an ac power. If we coo store in which device we can?

1629

Role of active and reactive Power sharing in between two synchronized Generators, Droop Setting role ?

1269

can we make a electric generator,which can not use any type of fuel,air,solar,gas,thermal,coal,petrol,etc and able to produce electrical energy (or self electricity generating generator)

1488

what is the circulate the diesel in DG in side pls tell parts name and picture with circulate the diesel

1520

anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?

1423




What is online and offline ups? how does it works?

1607

Why we are going for converter transformers for DC drives application instead of distribution transformer?

1428

how balanced in star delta connection ?

1609

What is the use of iron core in a transformer?

627

How we select the vector group of 3phase power transformer?

1970

Explain RLC circuit?

728

What types of high speed CMOS circuits have you designed?

1617

What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?

1407

what is the meaning of neutral displacement ???

2242

I need HT sphere gap calibration table. Can any body help me.

1517

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