Electrical Engineering Interview Questions
Questions Answers Views Company eMail

ELCP USE IN 3 PHASE SUBMERSIBLE PUMP? THEN USE 3 POLE 0R 4 POLE?

4 6147

what is the difference between surge protection capacitor and surge arrestor

NCS, NCS Sugars,

1793

What is the diffrence between ofline ups and online ups?

Intel,

3 5753

What is the purpose of RECTIFIER ASSEMBLY in AC power generators?

2 6047

Why we cant store an ac power. If we coo store in which device we can?

Jindal,

1621

I am looking for LV CT test. To check the polarity of the CT only. Can you suggest any supplier. Different companies are offering CT/PT Tester which is expensive. Thanks

2 4202

WHAT DO YOU MEAN THE DIFFERENT TYPE OF CURVES OF RELAY LIKE STANDARD INVERSE, VARY INVERSE, NORMAL INVERSE, LONG INVERSE ETC....

1512

difference between a diode and thyristor?

1745

What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?

1829

1.what is meaning of curve into a mcb. 2.what is basic reason changing of curve

1517

What is load shedding?

1 3899

What do you mean by eddy current loss?

1 3814

What are the causes of eddy current losses?

Schneider,

1 3929

when i am going to take trail on a 3ph sq.i/m motor 5.5kw, i observed that RPM of the motor is very low as compared to the rated RPM and also it rotates in clockwise in first ON command,and anticlock wise in second ON command. finally i observed that on phase is no available . but iam not clear about, why the motor is rotates in both directions without any phase interchanging.pls answer to my question.

1 4562

Our Alternator nameplate specifies a power factor of 0.8. When the Alternator is on light load, the bus bar voltage rises to 11240 volts, whereas the standard value is 10500 volts. Is it ok to increase the power factor to 0.85 or 0.9. I am afraid because the power factor on the name plate is only 0.8 ?

Escube,

3 5248


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Un-Answered Questions { Electrical Engineering }

HOW TO CALCULATE S/C,O/C,E/F OF ACB.

2115


what kvrah y we need to take the readind of that

1536


i have a 1500kVA transformer what is the kWH meter i need to use?

1175


What is servo motor? what is its purpose?

1564


Where is servomechanism used?

635






State norton’s theorem?

655


if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

1379


Is a direct shorth ciruit on a branch MCCB in a Low Voltage Switchboard a correct means of tesing the performance for discrimination?

1739


Is there any Institution for giving M-tech in Electrical engineering for those who r in service? Give the details please.

1549


What is the type of earth fault protection used in battery? explain.

1831


What is the function of under voltage release ?

969


Diagram and details of polarity test for Current Transformer 11kv 400/200/100/1A

2535


What is the formula to calculate the rating of power cable for three phase current.

1636


please send me RRB electrical engineer previous year questions for Sr. Section Engineer

1453


state types of reflectors in illumination engg. ???????

1434