Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is EMC filter in VVVF Drive ?

Bengal Energy,

2139

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

CPCL,

1657

why D.C excitation is given to sunchronous motor?

6 8201

What is mean by hormonics?

5 6559

What is mean by power factor?

Shreem Electric Ltd,

18 23721

WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

Adhunik,

1729

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 3780

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

5 11784

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

1 3826

What are the functions of different Parts of Alternator?

2 20533

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,

1492

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

Lapis Technologies,

11 33084

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

2 12585

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

6 19162

Why HT cable have only 3 core ?

Jindal, McDermott,

10 26649


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Un-Answered Questions { Electrical Engineering }

What is instrumental error?

696


i want wipro vlsi placement pattern please send me

1315


Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm

1687


working principle a.v.r. ?

1917


How a band pass filter is constructed?

640






In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???

2000


Please elaborate th´evenin’s theorem?

702


Which is the largest hydropower station in the world?

626


what sort of general awareness questions are asked in o.n.g.c entrance exam?????????????????

4218


formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?

1663


H.t motor 6600 volt to same motor lt supply 440volt supply applyed to h.t motor to effect....

1483


what is the effect of power factor of machines in starting current

1530


number of I/O devices in siemense plc

1651


What will happen if we on 200kvr capacitor bank(11kv in bus)If there is low load on transformer (1.5 mva 33/11 kv)

1128


What is VSCF windelectrical system?

1354