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Electrical Engineering Interview Questions

what is the carona effects meaning in HT line transmmission system

1263

I want d.g.set our company

1138

i am having a 3 phase 12.5HP motor,that is connected in Star/delta.Without any Trip that motor stopped suddenly why?

6331

How to calculate cable rating for 3 phase supply?

1488

define the active power?

1310

define reactive power?

9371

as per IE stranded what is max voltage between neutral to earth. 100 kva transformer neutral solid earth. min and max values i need to ans for RTI question

3337

What will happen if 2 phase supply is given to 3 phase motor?

ABC,

5387

why should a transformer be never connected to dc supply

6084

why electron flow is opposite to current flow?

4509

why the power factor is low at no load?

3166

What is the maxvoltage drop allowed at any healthy joint at full load ?

2064

What are objectives of energy managements ?

3080

how to calculate the current carrying capacity of a 25 & 16 kva distribution transformer.

4118

can a 12v dg starting battery(150 AH) be replace by 6 nos of 200AH batteries each of 2v connected in series.

3688

Un-Answered Questions { Electrical Engineering }

what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV

1524

Swg formulae

1372

what are the tests comes under the type test, what tests comes under routine tests.

882

hello if any one have papers vof hpcl or sail, plz send me

1184

What are the different modes of plc processor?

538

temp of cast resin 1500kva tx formerwent up to 138.c but came down very fast to about 100.c within 20 mins when load was reduced from 70% to 60%

1327

How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?

1330

explain the mode of metal iranafer in Co,welding

1015

How we calculate DC inducation moter Amp? Sir pls give me formula......

1274

What we mean by vintage of an engine+Generator?

1393

In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring

1341

What is an Air COmpressor

1555

Trafo ratio is 11kV/6.6kv,Vector group is YND11. What will be the effect if secondary is used for earthed system.

3120

Difference between earthing & grounding.?

1397

in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

1547