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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the use of choke in tube light?

5 7573

What is Creepage distance?

1 2246

the site measured knee point voltage of protection class CTs should be greater than rated knee point voltage? what about meetering class CTs. Should it be below the rated knee point voltage?

1206

transformer spections :: input voltage 0-110-230v; output volage 0-10-12-14v; amp=3A using CRNO CORE, capcaity=50VA primary turns = ? ; secondry turns =?

Bhel,

1113

1. transformer design formula ? 2. how to calculate the primary turns and secondry turns ? 3. core types ? 4. how to find the primary current and secondry current ? 5. how to calculate the stacking factor ? 6. range of fulx density ?

Automation, Indian Railways, Mogora Cosmic,

2 9247

why only violet glow appears in corona effect?

1 3943

can any one explain me the where is the use of plc and scada

4 3547

What are Contactors? How they works and what its highest rating?

1107

I HAVE A 1 MVA TRANSFORMER, I WANT TO KNOW THE FAULT LEVEL OF THE SYSTEM ( WHAT IS FAULT LEVEL PLEASE EXPLAIN WITH EXAMPLE)

Alstom,

5 19766

could any one explain me what power factor and where it is use ful

3 3268

i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com

1130

WHAT IS TANK CKT.?

4 5376

HOW MANY TYPES OF FUSE?

1227

what is the purpose of vector group in a transformer ? if 2 tranaformers r connected in parallel the vector group is same or not? for parallel operation 2 transformers of different manufacturers maintain same vector group or not?

Orchid,

3 11329

what is the main purpose of line PT and bus PT?

L&T,

9 54373


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Un-Answered Questions { Electrical Engineering }

what irequirment need to be followed when working on live equipment

895


i applied for the ap transco please forward the freqventley asked QA

1119


WHAT IS THE MEANING OG (li = 7 In)

977


How to Decide(calculate) Bush bar size for copper and aluminiam ?

1292


what is (+) and (-) in generator field detector stand for?

1011






Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

805


What is voltage ratio of a transformer?

236


how many stairs have you climbed while you were coming

1246


How to decide and select the different earthing wire size for the different types of earthing

1428


I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- maitheerainbow@gmail.com

1104


draw the full wave and half wave circuit of 3 phase system and inverter circuit used in upsĀ 

1520


How to calculate capacitor bank size at a load 800kVA.

715


why electron produce magnetic field when it is in motion?

1273


sir pls tell me . our ct specifications are 120/5 ,2 core , 0.2 and 5p10 class , 30va and 30va buden. insted of 30 va i want use 15 va. can i use?

560


What is the significance of integral controller and derivative controller in a pid controller?

219