Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

NEPC,

1 2840

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

2 3572

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

Havells,

2 5279

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.

1302

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

1263

how to calculate knee point voltage for pt?

Amec,

1 1850

HOW TO CUT A CAKE IN 8 PIECES IN 1 STROKE

3 5078

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

3 3961

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

1689

what is the function AND aplication of CBCT?

2 4478

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

2 3426

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

1 2929

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

3 3818

why starter use to on a motor

Emco,

6 7374

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

3 21587


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Un-Answered Questions { Electrical Engineering }

how we calculate the withstansing current capacity of wires&cables?

1479


What is core CT & it's function?

1618


hi frenz,its aswathy.i hve aplied for the hpcl test on feb,pls send the test patern & the placement papers as soon as possible. mail-id :kjaswathy@gmail.com

1302


what is the string efficiency

4469


Why sometime AVR and sometime Booster coil is used in Alternator? what is the diferance between AVR & Booster coil due to which they are selected

2560






what is package substation.how many types they have

1669


what will be the maximum winding temperature of 6.6kv HT motor 450kw, Full load current 49A. 50Hz Frequency.

2748


How vfd saving power.

1526


all details of DG UPS HVAC

1524


what are the things that can cause a three phase motor to crawl?

2860


When a single pase capacitor run motor- run on 230vac and Case(1)run with 8 Mfd 250 vac.capacitor , Case( 2) run with 8 Mfd 400vac capacitor. What is difference between both case regarding power ,efficiency etc?

1642


How to measure the Harmonic Distortion of UPS ie THD?

1730


Please tell me the formulaes while designing a substation for power Calculations in designing a 33 KV Substation?????

1367


why 1.7Uo for HV cable Hi pot test?IE standard why?

1859


by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

1510