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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the different between bus section and bus coupler

 1 3227

what is the different between bus section and bus coupler

 2 35277

If the capacitor feeder is switched ON without any load, is there any display in the ammeter at the incomer?

RTD, Welspun,

3 4430

What is the importance of RESONANCE

 2 3406

1 sq.mm alluminum cable hou much current caraing capacity

 5 9181

How can we step up ac and dc ?

 1 2805

how can findout cable fault Location only useing MEGGER

 3 5695

why ct is testing using dc.. y cant we use AC insted of dc on POLARITY TEST.

 6 9734

What is the relation between the Peripheral speed(N) , no.of poles(P) and diameter(D) of a cylindrical rotor alternator ?

NTPC,

5 10087

what is IMPEDENCE? FORMULE?

 6 6065

what is diffence between synchronus and asynchronus AC motor.?

 1 3153

Why is the uniform distribution of the capacitor discs in a suspension type insulators essential , what can u do to improve the string efficiency ?

1 3470

What is the size of cable to be used for a Space Heater in UPS 160KVA of carrying 10 Amps current with 240 V ,1 Phase?

 3 3824

How to calcualte the total number of cells required for particular UPS of some X KVA with 3 and 5 hours back-up?

JLL,

1 2335

what is the difference between ac and dc hipo test of cable?

 2 6687

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Un-Answered Questions { Electrical Engineering }

what will happen if frequency is below 50 hz?

1333

In layman terms, what is the difference of Dielectric strength and dielectric constant when speaking of an insulating oil

1966

Is it possible to connect a safety device in to parallel?

1378

neutral earth resistance testing is it possible for transformer while in load condition

1267

How a band pass filter is constructed?

483




what is magnetizing current test in power transformer

1995

If Dg set load increase 25%, How much increase fuel Consumption (15 kva 2 cylinder DG set)

1654

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

1366

In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???

1821

Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .

2769

What is trip and closing coil in cb? Why need of them

809

why high speed tripping relay is used in protection circuit why not normal relay

694

What is warm / cold start of HT motors. How many warm start & cold start are possible in a day?

1401

Define maximum demand?

483

advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor

1199

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