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Electrical Engineering Interview Questions
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How to calcute the cable size for both HT and LT please specify the formula for that Regards Chethan C

Bhel, Student,

1 1888

What is the meaning of CT 40/5, 100/5 or in HT lines 100/1 ????????

Amex,

3 23275

how does the rotating m.m.f is produced in the 3-phase induction motor and how the poles are created in 3-phase induction motor ?

 2214

What is fuction of NGT/NGR using in Generator.

 9 44681

How many types are using in 220kv/400 kv swith yard

 1741

Can u tell me design of switch yard

NTPC,

1683

How i can decide that HVDC line is best for transmission.

 1429

WHY FLEXI LINKS ARE USED INBETWEEN GENERATOR TERMINAL OUTPUT & BUS DUCT CONDUCTOR.

 3 4882

why we r used APFC Panel in industrial area.when P.F. low then wat will be the effect in our system?

ABB, Georgio Rocks, Piramal Healthcare, Zenith Engineering Corporation,

10 36982

why we are used D.c. voltage in L.T.side or controling side.we can use UPS also ,in place d.c. voltage

ABB,

5 7245

why protection and metering CT's are always connected in star why not in delta?

Reliance,

5 11274

how to select the mpcbs and contactor for 3 phase 30 hp star delta motors.for plc control.and tell me the calaculation for future use.

 1458

If any one's require of phoenix contact like( relay , termilnal block , surge protection device ) , product please contect me 09878206357 chetan verma

 1629

where this neutral connection goes after returning from the load(home ,factory,industries).Is it grounded at the transformer side or atthe generator side .If it is grounded then we also ground the earth connection.is there any problem with this.

IOCL,

1 2185

why the difference arise between HT reading & LT reading (submeters fixed in complexes, apartments etc)if the power factos exceed from 0.9 to 1 can the ht meter reads fast?

 2183

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Un-Answered Questions { Electrical Engineering }

What is milivolt dop test in Busducts? What is its significance & procedure to do the test?

1569

Why let through energy not considered for ACB breaker while cable sizing?

1855

hi frnds...pls send me aptransco previous papers .....pls..pls,,,(madhar.rocking@gmail.com)and suggest me some websites

1692

please forward me the type of questions which would rise while me attending to 33KV Electrical License to my mail ID:vadrevu_raghava@yahoo.co.in

1537

What is the necessary and sufficient condition for stability.

701




WHAT IS MEANT BY OVER EXCITATION IN GENERATOR TRANSFORMERS? DESCRIBE IT.

2157

how u select control transformer for a mccb panels or any panels?for expample we hav 440 volts maim supply and control volts is 230v?

1667

what will happen if earth of 33 kv cable (earthed system) is not connected to earthing pit?

1531

What is a system?

681

What is the application of Dyn1 and Dyn11 vector group of transformer?

2427

What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

667

What is the unit of magnetic flux density?

693

Why reactors use before incoming of ac vvfd drive?

1356

what is buffer resistance starter.?.What is the working principle and where it is used..?

1555

when it is possible kvrah lead & fundamental kwh be equal in electonic trivector meters (3 ph)

1510

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