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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

describe the Tranformer testing procedure

1262

describe the A.C. Generator Testing procedure

1486

please write motor, transformer, Generator setting, fault level calculation of Tr.etc

1363

if power factor comes in leading & showing -0.95. Is there any effect on electrical system? if yes, then please tell me what would be the effects. & how long we keep power factor in leading. Keeping power factor in leading shows more KW & less KVA is it correct or not.

Jakson,

2 5816

what is rotor earth fault protection scheme in hydro generator & what is dc field flashing ?

NHPC,

2 7900

how dg's working of 1000kva.

1 5158

what is the principle of switch gear? where its function ?

9 22514

what is the difference between capacitive voltage transformer & inductive voltage transformer.

3 21785

How to know the back up time for a 5KVA UPS which is connected to 15 nos. of computers? Is there any formula for this? pls. tell me.

HAL,

1 3084

what is the power rating of CPU, CRT type moniter, LCD type moniter,scanner Approx.

HAL,

1499

Generally at what power factor the electronic equipments like computer, TV, EPABX etc.,operates. Please tell me.

HAL,

1 3097

what is the reason for indication of light in the earth lamps of main switchboard.if there is an earth why does one lamp get dim and the other two bright.

1631

Which type of power plant is more easier to produce electrical power at economical condition?

HAL,

5 7229

can i able to get bhel previous exam question paper?

Bhel,

1499

in three phase with neutral connection, what will happen,if the neutral is in open condition with single phase distribution panel

4 7777


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Un-Answered Questions { Electrical Engineering }

The slip during plugging operation is given by= A 1-s B 2+s C 1+s D 2-s

2186


Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha

1517


why Induction Generators are not "Black start" ? and apart from WTGs where this types of generator are generally used?

2061


What happens when ac supply is given as excitation voltage instead of dc supply

2876


Why Utility Distribution System in India is mainly at 11 kV? Why not Utility go for 33 kV?

1154






dg earth connect only in the amf panel or not why

1420


how to calculate transformer load?

1782


What is electrical grounding?

445


Leakage current,un balance current which relay using for high voltage transmission?

1467


Hello Friends, How can we recognize the CT Star Point is S1 or S2 in case of Electro Mechanical Relays and what is meant by Restraining coil in relays and what is the purpose of that.. thank you in advance..

1500




1473


ROC converges if poles and zeros lie inside a. Origion b. Z=1

1482


How do apply electrical 'c'license......pls advice

1095


WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.

1264


Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.

2667