Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is maximum or Threshold value of current 7 voltage that a common man can withstand

1 1223

how to prepare PPM schudule

TATA,

3 3187

what does the regenerative braking mean?and how it used for Dc motor? thanks.

2 4070




would the same effect be achieved by reversing the connection to one winding of the induction motor 3-phase?

846

Describe the control mechanism of missile launcher???

DRDO, ONGC,

968

If ac 230volts inputsupply to full wave rectifire what is D C output voltage.

3 3108

we can stepdown the voltage from 230/12v ,and we use the voltage for various electronics components why can't we step up the voltage from 12/230v if we can shall we use the voltage for domestic single phase supply

Areva,

5 5389

A 11000/415V distribution transformer is fed 415V upon it's LT side,Do I get 11000V upon it's Primary side ?

7 9744




For having nonavailablity of 10 Amps fuse, a lineman replace the same with 5Amps two strand, Do he correct ?

4 3334

What is the difference between Analogue Addressable Systems and intelligent Addressable Systems

1 4204

at the time of starting back emf of a motor is zero.so how can it will start to run??

1 2326

why we have to do tan delta test of the transformer oil???

5 14554

How to choose primany and secondary side MCB

1 1418

why firewall is build up between two transformer (220/11kv,50MVA)?what should be the firewall height?what is the clearance between firewall and transformer?

Siemens, Tous Stadt,

2 13963

In a Synchronous generator, Can AC voltage be used instead of DC voltage in field winding of rotor to produce AC power?

NTPC, Windia,

10 13552


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Un-Answered Questions { Electrical Engineering }

Why the power generated in dams is complex power? Why the generators in dams cannot produce Real power directly (i.e power which has zero reactive part)?

805


Is the installation of the filter cloths necessary before spreading the gravels at the transformer yards?

951


what will happen if OLR CT in all phases are short circuted

1070


1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?

1056


If you have an earth with pilecap then your resistance is really low. why and how?

943






at meter room 50 hrc switch installed,but there are not get earthing proper,so what happen?and 11kv transformer out put going in to hrc main 400a three nog each? so earthing is require for all switch? (some customer made earthing at there home.)

954


What is the relationship between voltage,current & frequency?

737


In a flange coupling, the flange bolts are designed for

122


how we arrange the hv side with delta connection in case 33/11kv of transformer.

995


why the check zone and main zone are used for Busbar Protn. scheem?

1069


How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

1203


What is Tachometer used to measure?

128


what will happen if frequency is below 50 hz?

904


We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.

380


What is the comparison of PILC and XLPE cable

664