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Electrical Engineering Interview Questions
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If we have a 2000kva load,How much kvar capacitors we go to add to improve the power factor at 0.9?pls give the calculation and fully theory?

ABB, Unitech,

2 5507

what is the kva rating of 20 kv transformer?

1 3487

WHY RATING OF VCB NOT LESS THAN 630A

1472

Hi, what is the temp of bus bar.

1 2414

How many types of Differential protection are there? and what the special arrangement are made at the time of charging of a transformer on the Differential protection?

1 1502

Why DC exitation to AC Generator? Why not AC?

Equate,

2 4576

Which type starter is used for synchronous motor?

Equate,

2 5172

What is infinite Busbar?

Equate,

4 13244

Why neutral point is consider as zero potential?

Equate,

1619

What is Nominal voltage?

Bhel, Equate,

3 7416

What is floating earthing?

Equate,

2 4026

What are the different methodes for calculating the short circuit Current?

Equate,

1109

What will be result if we connect LT votage to the terminal of HT motor?

Equate,

1318

What will be result if we connect LT votage to the terminal of HT Transformer?

Equate,

3 4138

How to select the different contactors ( starter combination) for different AC motors? what about fuse cappacity 4 different motors too?

Equate,

2 4515


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Un-Answered Questions { Electrical Engineering }

i ha done my 10th with 71% ,ITI with 81% 11th with 75% 12th 43% apprentiship with 71% in SAT i secure 1390 ,TOEFL 27 i was refused four times and in all me interview visa officar told that i am not Qualify for study in USA but i completed my 12th yes i got low persentage in my 12th but i seen to much student they already got visa with them 3 or 4 backlocs so why they are refused me ?

2653


What are the conditions for sustained oscillator or what is backhouse criterion?

244


how to measure winding resistance of single phase motor?

1439


If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.

65


What is the use for cable entry in control room?

240






How to design inductive load for 3 phase 440v and maximum 5 amps for star or delta? Can we use a 15kW, 1450rpm motor for 15kW, 960rpm apllication?If yes.how......n.if thesame motor used what`s it`s sideeefect.

1666


Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?

1335


Define gain margin?

233


What is “pu” in ee?

237


Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

3015


If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

1088


Dear all i want to know FEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me shibin_75@yahoo.com

10000


Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?

1276


What types of question are done for diploma students in aptitude test

609


Is it required to use Automatic transfer Switch in L&T panel board if we use AMF panel with DG set? How the single line diagram will be? Please forward the material to sreenu_207@yahoo.co.in

3752