Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is EMC filter in VVVF Drive ?

Bengal Energy,

2107

what is proper capacitor placement? How to evaluate capacitor size?

CPCL,

1619

why D.C excitation is given to sunchronous motor?

6 8070

What is mean by hormonics?

5 6415

What is mean by power factor?

Shreem Electric Ltd,

18 23422

WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

Adhunik,

1694

Can we inject more current in ct primary paralleling 2 loading transformers/Injection kit at a time?let ct ratio be (5000/1A)(per kit rating 2000A range),i need to inject 5000A,if this cant b done means wat is d optional?

1 3733

Can HT cable(11kv cable) be used for 415V, 700A requirement.

5 11620

What are the different parts of Alternator and how it works?

1 3784

What are the functions of different Parts of Alternator?

2 20460

How can we calculate strength of copper hich is supplying electric power to heater and in it hold the heater also and what r all types of forces which is acting on it...

ABB,

1455

How Much Capacity of Diesel Genset is suitable for 20 no.s of 1.5ton AC's & Why?(Load Calculation)

Lapis Technologies,

11 32719

how we can select MCB ratings according to Voltages, Curves.

2 12525

how to calculate the powerfactor in induction motor having name plate details? for example 1 h.p motor 1.86 A 415 V

6 19016

Why HT cable have only 3 core ?

Jindal, McDermott,

10 26420


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Un-Answered Questions { Electrical Engineering }

Define peak overshoot.

764


why industry prefer ht motor instead of lt motor.

1619


Advantage of LT panel vs HT panel

2322


Define noise?

700


Is there any standard guidelines/Criteria to design NGR/NGT.?

2334






what is accuracy ? in any meters , coils accuracy . how can u defined that ?

1902


hi frenz,its aswathy.i hve aplied for the hpcl test on feb,pls send the test patern & the placement papers as soon as possible. mail-id :kjaswathy@gmail.com

1288


How to calculate the phase to phase clearness of HT /// LT bus bar?????

1563


Can you any one explain application of buccholz relay operation and pressure relif device operation of power transformer

1416


Why do we need interlocking in a HT metering or Ring main unit switchgear?

1537


Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?

591


can i connect REF and Differencial relay in 1 CT core for transformer protection?

1441


what is the ATS .And how it works.

1025


What happens to voltage when current is zero?

747


what are factors to be consider in electrical installation like load factor,diversity factor .....

1338