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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Can I use RCCB in moisture control device in a submersible pump.

TATA,

2 3702

how the direction of rotation in a dc shunt motor could be reversed?

2 2633

in the exciter the power is feeded from battry or control or whatever.and we need it in the generators for the stating . do we need it in the shutdown also?i mean the exciter>

Shell,

2 2595

What is proximeter? where it is used and why?

1 2746

why protection meter is always connect to star

1 1871

Can we use same copper cable for both AC & DC power.

3 3560

why the earth pin is thicker than other pins in a plug? If it is for reducing resistance, then why the copper earth wire is not so thick as earth pin of socket?

Omax,

5 5736

why voltage will come different in phase?

HP, Vissa,

3 3556

What is the full form of GSL wire

Bhel, GSL,

7 18688

wil a dc motor run without a starter??

MRF,

9 16012

how do we fix the rating of mcb required for a specific capacity of the electric motor

2 4072

if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

1 2380

Require Generator Capcity ( KVA ) for 3 Phase Motor having 4.7Kw with starting current of 16amps?

1 2825

diff between UPS and inverter?

2 3715

why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?

1272


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Un-Answered Questions { Electrical Engineering }

Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

1969


a 100mva,400/200v transformer has leakage impdce of 10% draws a steady state line currentof---------------

1016


Explain how you intend to work under pressure to meet up with deadline target?

4197


I Want randstand placement papers

825


What is speed mode?

747






delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?

1078


What is big transformer parts and their function ? Ty

1105


Why negative feedback is preferred in the control system?

290


Which standard we are following earthing resistance test

524


how to measure the transformer resistance values(dyn11)?and howmuch the minimum value?

1178


which are the criterias needed to select the kind of neutral earthing(solid earthing,resistance earthing,etc.) at various voltage levels in electrical distribution?

1074


How to calculate the fuel consumption for 600kva DG genset which connecting with 25%load?

1180


We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.

1169


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

1596


Why have to use copper cable for local isolator to motor ?

1203