Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what will happen when square wave is fed into input side of 3kva transformer and what you will get on output side.

Blue Star,

3 5511

Whether earthmat designning is done only for sub station or it can be done for multy residential complexes also? What is the size, type & arrangement of the earth grid to be done?

1 2593

Help need in transformer !? Hello Friends The parameters of 2300/230 v 50hz t/f is R1=0.286 ohm R`2=0.319 ohm Rc=240 ohm X1=0.73 ohm X`2=0.73 ohm Xm=49.2 ohm Secondary Load impedance ZL=0.387+J0.29 solve the exact equivalent circuit with normal voltage across primery.. I know every thing but i cant find CURRENT I1=? and I`2=? Please help me give solution or only Formula please please...

2494

Why the outpet og DG is 415V not 440V?

1 5248

What is the meaning of EDO in DG panels?

Bajaj,

3 6556

what is the use of interposed & reverse voltage transformer

Anjani Steels,

2 14528

Why we are not placing c.B 's btwn generator and transformer.? what happens when generator gets disconnected from transformer when it is running @ full load?

Areva,

3 5081

Instead of single phase(220), if apply Phase to phase supply (eg: for lighting fixture). what will be the power formula? what will be the volt and current value? please explain me with some example.

1 2344

what is phantom load, Give any example

2 4427

what is the impedance voltage of transformer?

AVI Enterprises, MacLellan,

1 3280

11kv alternator commissioning test?

2 13388

What is an alternator impedance value?

Orchid,

2394

Diff between power trans and generating transformer?

1 3188

What are the tests to be conducted in the electrical installations

1 3123

pls send me some of the solved question booklet of Junior Engineer -2 (ELE) in RRB

RRB,

1 3444


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Un-Answered Questions { Electrical Engineering }

In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above

1563


What is the capacitance values of 132,220,400 & 765 kV current transformer

1451


Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.

1677


which is the best institute for PLC,SCADA,DCS in hyderabad

1875


Define filter?

638






May I know how much values to be set for earth fault, over current and short circuit values at 11kv side? I have 11kv van 1250amps rating. Present it's taking load 80amps?

1015


HOW TO TEST A LIGHTENING ARREST ER ?

1694


hi I have done 3 yrs diploma in electrical engg after 10+2. I have 16 years of work experience into design proposals sales and engg application development in LV/MV swithcgear and sub station automation field. I want to apply for immigration to new zealand but I am not sure whether I qualify or not since I dont have a degree. Can anyone advice? Thanks Riz

1827


Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

2278


what is subtransient , transient and steady stateac components

1704


what the function breaker failure scheme, how is it operated

1416


We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.

1236


can u give me a brief idea about power line carrier communication ??

1481


PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL

1405


why HT armoured cable does not glanding

3683