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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how to calculte capacitor range for single phase induction motors??pls tel

1152

How to select HT/MV cable size ?

1592

WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

Siemens,

4648

what is the relation between Sq mm of wire and its current carrying capacity?

Finolex,

5 25955

How to select KW/HP rating of motor for particular application? Is there any relationship od RPM?

1 6918

Relation between Sq.mm of wire and Its current carrying capacity?

5 15874

1 ph induction motor winding priniple and connection diagram?Similarly for 3 ph induction motor?Full description

3253

how we can save the power ? suppose the electricity board gives 11 kw , but the machine require only 8 kw means how we can save the exese energy

2 3077

If we are importing real power & exporting reactive power then what will be the effect on our system

3 7248

Why HT motors are connected in star.

GIL,

7 18654

why the frequency in india is 50 50HZ why we not select the o ther frequncy range?

6 6691

please send the last 5 years {{{JUNIOR ENGINEER - ELECTICAL, ELECTRONICS RRB CHENNAI and secundrabad}}} TECHNICAL question papers TO MY EMAIL ID dinesh100701@gmail.com

1254

in cvt,there are two windings,1a,1n and 2a,2n.in my one project i use only one winding i.e.1a,1n. the other winding is not in use, so i connect it in open delta and want to close it by ibsertibg thermal resistor. the output of cvt is 132kv/115/sqrt3. plesae tell me exact value of resistor, so i may close it to avoid the resonance phenomenin. send me answer on this email adress please. aetcon-po@aetcon.com

1639

What is C check in a diesel generator and what are parts and what has to be done during the C check

4 15608

What is D check in a Diesel generator for 1000kva DG

Escorts,

9 33770


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Un-Answered Questions { Electrical Engineering }

what is x'mer ,isolation x'mer & yltra-isolation x'mer?????

1347


what is earth pit , how we can measured it, what earth rods reference

1688


where lt & ht capacitor used

1357


Could the power factor on electrical system can affect the registration of the kwhr meter or the CT/PT? 

1069


We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.

839






What do you mean by an instrument transformer?

249


What is star-delta transformer?

230


my name is venkat .i have good percentage in my academics(ssc 86, intermediate 83 b.tech 73) my question 1..after completion of my ssc i joined in bpc but i didnt got rank in emcet so i completed MPC in one year compartmentally ..so here what am expect question from this background?

1067


Draw torque - speed curve and load curve of induction motor? mark operating point ?

1106


what is the difference between the voltage of 5 volts capacitor and and 5volts battery?

1091


how to find motors H.P. whout any rating? (only give you a motor and multimeter)

3541


What is the actual calculation for transformer short circuit test?.

1519


define hysteresis loss, eddy current loss and windage loss

1098


what is Insulation monitoring device. where it is used? (in switchgear room or control panel or in field equipment)

1288


in parallel operation of power transformer why the distance between power transformer and capacitor bank feeder is necessary to know

965