Electrical Engineering Interview Questions
Questions Answers Views Company eMail

IN dc capacitive reactance is??

889

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?

917

How many kw will suply from one db

1035

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

1299

Why single phase induction motors are not self starting ?

1024

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.

1782

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)

1088

what is a synchronizing lamp ?

953

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

Khan,

1397

What is hipot test procedure?

CCC,

942

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

1211

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

1332

What is generator

1389

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?

983

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

1083

Un-Answered Questions { Electrical Engineering }

Explain the advantages and disadvantages of thermal power plant?

573

what is the need of starter in tube light and what type of starter is used in that?

1486

How many Zones can be in Conventional type fire alarm system & how can we detect the fire in Conv. type FAS?

1341

What is the difference between rated and per unit in transformer?

1670

what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct

1250

why do we put a transformer on soak before loading it

599

WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION

1466

what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

1430

how oltc works in rectiformers of higher rating (27 mva,200v dc,120kamps) please provide me full information with diaggram.

1672

sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers

1468

H.t motor 6600 volt to same motor lt supply 440volt supply applyed to h.t motor to effect....

1429

1sq mm dc powr cable can carry how much dc currnt

1449

Witch do depand of Power factor and theory of power factor?

1614

What does the term power factor shows?

576

Define phase lag and phase lead?

597