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Electrical Engineering Interview Questions

Which type of starter to used which type o motor

937

Dear sir, please tell me how many day use CTPT transformer

1522

What is the kva?

2047

Why NGR is provided in sub station?

MMS,

2296

why moisture formation found in XLPE Armoured cable outer sheath

926

I have c license but I don't know eligibility of Max Kilo Volts under the electrical licensing board.

815

transmission line losses

1140

Why R ph of Hv and Lv is shorted or joined together while taking vector group?

IOCL,

1460

working principal of online ups

902

Why line VTG = √3 phase VTG in star? How?

749

Why Generator KVA not in KW ?

2613

what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?

AB, JLL,

719

after applying C-License in how many days we get it?

1247

750kva 11/415kv transformer having percentage impedence is5.64%. 11KV HV whose current 39.37A and 415V LV whose current 1043.43A.resistance is 2.5ohm. find no load loss and full load loss?

1384

I have 30 kw motor load & i have selected 10 kvar capacitor bank for power factor improvement.my existing p.f is 0.85 & proposed p.f is 0.99 so ,is it right selection? 2 nd question how to connect c.bank whether in delta or star connection & how to decide it?

1557

Un-Answered Questions { Electrical Engineering }

What is the breaking capacity of transformer and how can we calculate the breaking capacity of tranformer

853

How will be the single line diagram of series trip HT breaker? how it works?

1649

Hello to all, Please someone can send me HPCL ELECTRICAL Engg. Sample papers to me? Its urjent....my email address is.... raviasiapacific@gmail.com

1255

WHAT IS THE CURRENT CARRYING CAPACITY OF 2.5/3 CORE HI TUFF CABLE,WILL IT SAFLEY CARRY 8.6 AMPS OVER 120 METRES,CAN YOU ALSO ANSWER WITH FORMULA FOR WORKINGS OUT ,THANK YOU 3RDYR APPRENTICE.

2594

what happen if generator of micro hydro running at only a small percentage of its capacity, as a comparison, if the diesel generator that runs on only a fraction of its capacity there will be a wet stacking

1029

how technical is calculated in 11kv line and lt line

1088

volts=230 c=10mf a=??

1150

I'm looking for a softcopy manual set for a Credence ASL- 3000. Anyone know where I can get it?

1154

Why do we apply both Differential and REF (HV and LV) protection schemes on YNyn configuration of a transformer?

1113

Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.

4190

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

1088

If we have to feed a housing complex having load 8MVA, than what would be the better option, either we first step down 33kv supply into 11kv & than 430v or we proposed no of 33/.44 kv transformer, also which option is economical?

1289

if there are six generators (3 gas CATT, one Jenbacher o1 MW each, and two nos Diesel 01 no 01 mw other 0.65mw EDGs ( say), 3 CAtt gas set have identical pole pitch,01mw EDG and Jenbacher gas Set have different pole pitch, how their power connection can be done to connect a common bus bar during installation. in short, how different pole pitched generators power connection can be done to connect a common busbar system through generators incomer ACBs.

680

HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?

3023

i have done diploma and btech in EE and live in Chandigarh so kindly help me how can i make my competency certificate in my area.

1377