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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what happens when we give supply to the secondary of a transformer ?? for example 415v(pri)/110v(sec)

2 3882

what is mean by tan-delta tap in the potential transformer??

2 4434

which generator is called as brushless excitation generator and why??

3 6880

difference bteween neutral grounding resistor and neutral grounding transformer??

1 3602

how to find the capacitance value of the motor while running??

1010

what is the difference between delta-delta, delta-star transformer???

3 16107

how to calculate the ngr capacity(nutral grounding resistor)

Divis Laboratories,

2 8448

how to calculate the earth mat design in 132 kv substation yard ????

Divis Laboratories, KSEB, SWPL,

5257

how much distance is required for earth pit to earth pit in substation???

Divis Laboratories,

3 8731

what is full form of dyn11( in transformer)

Divis Laboratories,

5 9824

how to estimate the breaker capacity of breaker,please give the one example( 6.6 kv breaker,800a)?????

Divis Laboratories,

2 3617

How to calculate the current of Highpressure Mercury Vapour Lamp?what is the basis?whether we have to consider power factor or not?

Divis Laboratories,

1190

why we use stones or rock pieces in transformer area?

10 25685

how to calculate restraing current and operating current for differential protection if 20 mva transformer is OLTC 33 kv/11 kv ? and what should be the type and ratio of CT?

L&T, OPS,

2 4067

why the neutral point of star connnection oscillates?

Avalon,

3 4761


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Un-Answered Questions { Electrical Engineering }

i've iocl interview.. if you know the interview process please give me information..

1081


Explain thin film resistors and wire-wound resistors

253


what is fault level of power system ?

4077


can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?

1109


what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?

1333






Can you explain about Restricited earth fault protection scheme

941


for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?

84


how i chosse capacitor bank if my energy meter is 48 kvr? tell me capacitor bank chossen formula?

1545


Is there a diode made that works with AC 120 volt 20 amp? If so can it completely stop all current flow in 1 direction at all times?

5580


how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

985


Why field rheostat is kept in minimum position while armature rheostat at maximum position?

242


I FINISHED MY B.TECH IN EEE . I AM IN NEED OF A GOOD TRAINING INSTITUTE TO DO COURSES .. CAN ANYONE SUGGEST GOOD CENTRES IN TAMILNADU ,BANGALORE ,OTHER AREAS???????

1035


How to calculate capacitor bank size at a load 800kVA.

717


In siemens PLC, why do we want to move the data ?

1419


While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

1067