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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

in case of induction motor when overload condition or any short ckt. why stator winding burn not to be rotor winding

2 3702

when we connect a ceiling fan to a inverter's output voltage, it give some noise, why?

Luminous,

5 9738

what is mean by hormonics & surge? and it's effects?

TCS,

1 2181

what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

1382

what is PID control in VFD drives?

AES,

1344

hi Is there any possibilities to find out the rotation of a shaft or something else by using electromagnectic waves or by IR rays.If s then can v change the dir., of rotation of the same by remotely?& how? plz dn't any1 say "NO r CAN'T"

1453

Why should we hire you over the others waiting to be interview?

2209

What are your future plans for the company if permanently employed?

1499

what are iron and copper losses

4 15037

WHY CURRENT DECREASES WHEN VOLTAGE IS INCREASED IN A CURRENT TRANSFORMER ?

Sterling Wilson,

5 8937

in case of OC+EF relay, how the burden is divided/calculated/shared by the CTs in case of normal (healthy condition) and during fault conditions.? three coils of OC & ef coil is conected in residual connection across the three CTS.

1 2889

What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.

1659

the need of star to delta anddelta to star

2 3581

Do anyone know how can I calculate earthing for substation or do anyone know any software which I can use for this case

1 3037

What will happen if a dc source is given to a tubelight. Will it work or wont it work....

1333


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Un-Answered Questions { Electrical Engineering }

What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

1359


how to CHECK CT AND PT AT THE FAULT OCCUR IN GENERATOR RELAY PANEL .

1581


which model T or pie model is prefarable in power syatem

1248


whate is the meaning of balance/unbalance,in stabilizers type

1481


Did RMU have ct and pt ?

752






How is the connection of the tap changer on the HV side been made?

1342


What is the maximum operating temperature for a thermoplastic insulated cable?

447


What is frantic effect?

507


how to calculation increase capacitor,increase power factor for three phase.

1472


Explain how to determine capacitor tolerance codes?

464


i have a 4 Mva transformer 34.5 kv / 480-277 v and i used 2 parallel 3200 amp bus duct for the secondary feeder using 3 ply of bus bar ( 3/8" x 5" ) as a common where the flexible link terminated and 6300 amps breaker for the main, the lower bus duct reaches 70 degrees and the upper bus duct reaches 55 degrees when i used thermal scanner. why the temperature is not balance when the load reaches 3600 amps.

1224


if we give 60 hz single phase supply to the transformer used in europe , than what will happen

1369


WHERE NEUTRAL WIRE IS CONNECTED AT DOMESTIC TO TRANSMISSION LINE(SINGLE PHASE TO THREE PHASE)

1174


How 48-relay (incomplete sequence) functions?

3296


Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV

1576