Electrical Engineering Interview Questions

whay is snubber circuit , why we are using snubber circuit in thyristor

NEPC,

2931

How to test the vector groups of 3 winding transformer & phase displacements

3705

what is the advantage of using 3 phase line rather than using 2 phase line?

5407

need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.

1364

hi, could someone help me to find a control design for syncronising panel .

1320

how to calculate knee point voltage for pt?

Amec,

1939

HOW TO CUT A CAKE IN 8 PIECES IN 1 STROKE

5240

how step up transformer step up the voltage and what is the reason behind it?

4133

what is RFCT and Insulgard Relay & It's function?

1750

what is the function AND aplication of CBCT?

4597

When the load on the system is zero and Capacitor bank is on condition, is capacitor bank takes any load?

3561

hi, is there a difference in choosing bus bar for DC or AC ,,if there can anyone help me about. thanks

3017

Can 2 nos. of 1 ton split ac be used through a 20 am supply meter?

4030

why starter use to on a motor

Emco,

7642

what's the difference between ATS and AMF...??pls answer me in detail with its working principle and construction also..

21766

Un-Answered Questions { Electrical Engineering }

WHAT IS DEAD END IN PROTECTION?

2061

Why the standard of ambient teperature mentioned as 40 degree celcius in machines.

1500

How to see the inductance in a transmission lines

1719

From what on-site components does the HT panel monitoring the bus-bars in a 11kV system take inputs?

1566

How servo stabilizer works.

1694

we have consol make 3 phase servo stabilizer for cnc m/c. while installing the earth neutral voltage is 1.7 volts at stbilizer off condition and when stabilizer get on en voltage reaches 4.8 volts (new earthing is done and neutral is helthy condition all phase to neutral volts 440,442,441 v)why this happen.solution for cause.

5697

how are reversing the direction of dc motor

1243

What is s-domain and its significance?

788

How to detect voltage vector shifting in interconnection protection.

1508

what is the working principle of energy saver control panel. please give the complete calculation & theory.

1878

while doing high voltage test on 11kv/433 distribution transformer why we only give 28 kv on hv side and 3kv on lv side for power transformers what is the value what factors it depends

2432

How many types of interlocking use in screw type air compressor,make-Kaser(BSD MODEL)?

1666

What happens to voltage when current is zero?

818

how to calculate cooling requirement of datacentre from electrical load?

1903

What is self exciting?

1313