Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the function of commutator in dc motor?

3 3332

why odd hormonics only will effect the power system.why not even hormonics

1 855

Can any body tell me what is use of END OF LINE RESISTOR in fire alaram circuit?

2 4827




what is different between DIGITAL and ANALOG?

3 3124

Can any body tell me about INNER SHUNT COMPOUND MOTOR diagram?

827

what is the differnce between vector and phasor? are both same or there is difference between two term.?

5 9329

In batteries after completion of charging which colour gas is emitted from it?

Essar,

2 2391

(1)Electrical power is generated in KV, power consunmed is in MW and the transformers used are in KVA. How is KVA converted to MW as power being consumed by the consumers? (2)What is vector group of a transformer?

1 2336




Why we are measured insulation resistance applied through DC Voltage?

3 3549

function of soft starter .

2 5388

what is different between DIGITAL and ANALOG?

2 3019

why the voltage level is changed when the unearth cable is earth

2 3554

WhY PF low at Time of PT Missing in HT Meter

HCL,

2 3044

When One Phase PT Missing (voltage drop ) this time current is zero of This phase(PT Missing Phase) and current is Not Zero of other Phase but PF is always Low That Why

HCL,

741

what happenes if two voltage source connected in parallel will be connected to load.

Efftronics Systems,

3 11414


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Un-Answered Questions { Electrical Engineering }

will 1050kva DG set withstand for back charge of 16MVA transformer

659


I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

1086


what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?

7418


What happen when change order of CT in GIS feeder?

261


how to find out 3 phase complex power in per unit in unbalanced system?

863






What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

1601


How to test IR testing & magnetic balance test

770


Which Class insulation is prefered for the sandwich Busducts ? Why?

736


what is the difference between earth leakage and earth fault?

931


what is meant by 3rd hormonics ?

678


What is Negative Potential Bias

1068


sugest any typical project ?

678


grr resistance & contrator malt continuous

825


what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?

699


How to design inductive load for 3 phase 440v and maximum 5 amps for star or delta? Can we use a 15kW, 1450rpm motor for 15kW, 960rpm apllication?If yes.how......n.if thesame motor used what`s it`s sideeefect.

1301