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Electrical Engineering Interview Questions

IN dc capacitive reactance is??

723

Why in metering Ct for ammeters ct secondary side is grounded for each Ct but not in case of CBCT (Core balance current transformer)..kindly some1 highlights the reason..is it because net flux is zero?

797

How many kw will suply from one db

921

What happent when a AC motor(no break and starters ) stop and suddenly start . ? Starting current low or high?? Why?

1091

Why single phase induction motors are not self starting ?

888

Let's say I have 2 current carrying conductors C1 and C2 carrying currents of 5A and 10A. They are brought close to each other from a distance of infinity to a distance of 10cm away from each other - 1. What would be the values of current flowing in each conductor when (taking into account effects of interference of each conductor on the other) - a. The currents are AC b. The currents are DC c. C1 is AC and C2 is DC Please explain your answer with mathematical equations and formulas. Please specify the final numeric answer. Please make assumptions and clearly specify them.

1550

True or false question. 1.The fuse provide phase and neutral 2.power loss in electrical circuit can take place in (resistance or inductance or capacitance). 3.two phase system each phase has separated by a phase difference of (90 or 180 or 270 or 45). 4.3 phase balanced star connected load neutral current shall be (line current or phase current or zero or unity)

950

what is a synchronizing lamp ?

827

PRV (Pressure relief valve) Trip with oil splash outside power transformers

Khan,

1105

What is hipot test procedure?

CCC,

770

What will be the current rating of Main switch for 80 kVAR panel

1007

If a earth leakage circuit breaker trips is it possible to tell which house circuit breaker (I have four) is the faulty circuit?

1123

What is generator

1183

What are the criteria shall be considers for sizing Fuse and MCB? If the rated current is 10Amps what should be the fuse size / MCB Size?

842

What will be MF for below rating ? Main CT PT value is 11kva/110 and 20/5 amp Meter display is 1kva/110v and -/5 amp What will be MF ? Multiplycity factor of energy meter

876

Un-Answered Questions { Electrical Engineering }

actually i can't understand what is 3dB ? and it's really not clear to me.please any one let it me be cleared.

1523

what is reverse power relay brief explanation and in b/w where it is connected

1317

What is a copper loss or i2r loss pc?

511

What is the distance between body earthing and neutral earthing.?

3612

Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet

1903

Which level of the Transformer oil got dielectric strengh? And why?

1520

hello! sir i did three year of diploma in electrical (2007- 2010) and now i m a student of electrical engineering. sir can i apply for germany visa for study and part tome work over there?

1263

Igfet is a

1038

how to calculate mf when meter and cTPT detail are given

1151

What is the difference between a verilog task and verilog function?

476

what is R Core Transformer. how it differs from normal transformers. dont search in net and post the answer.

1441

Define the three phase formula fuse.

1226

what is the standard duration after failure EB power

1163

Under wat condition statcom operates as an inductor for the transmission line?

1262

hello!my name is sheikh iam preparing for indian engineering servieces,please send me the old question papers..to sheikhshaazforjobs@gmail.com

1434