Electrical Engineering Interview Questions

why lightning arrestor are made by 2 stack of insulator but why cvt are fully 1 stack of insulator.

3438

why we are maintain phase to phase clearence

5247

why generation of electricity in low value voltage

4314

why the insulators are in cofee colour???

10846

why the tapping of transformer on ht side??????

38080

what is maintenance?how to explain

1385

cable selection formulas for electrical load.

Bhel,

7360

megger how much voltage will produce ?

7761

How to identify the start and end of 3phase 12 lead motor if U1, U2, etc numberings are lost or erased.

1636

what is creepage distance

8591

what is the working principle of energy saver control panel. please give the complete calculation & theory.

1764

For what purpose an AVR in generator sensing generator output voltage?and how the sensing is done by AVR?

7784

Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.

HAL,

1562

Is it possible to use AC supply insted of DC supply in trip coil operation? if not, why?

HAL,

5751

How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?

HAL,

1510

Un-Answered Questions { Electrical Engineering }

Which power will flow first if we switch on a motor Active or Reactive? How?

4197

How much dc volt applied in cathodic protection system?

1765

How two nos. 130 kw D.C motor get synchronise using D.C drive.

1510

What is the Load Capacity of Panther conductor (0.2) and dog conductor (0.2)

2240

What is instrumental error?

609

During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.

1375

What is icu and ics in Acb and how many time icu or ics passes from breaker?

957

all the technical question with answers pleas send your email id ramar_eee@yahoo.com

1478

WHY BLADE & JOW OF ISOLETOR IN SUBSTATION?

3700

what is the difference between gas group b and gas group c electrical equipment construction wise?

1323

What do you mean by per capita requirement of electrical energy in india

1582

Incoming line 11kv And transformer capacity is 2500kva. Consumption load is 1300A. Then fuse capacity is 11kv line.

1198

Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?

1509

the problem faced on star or delta winding connection??

1430

what is the correct format to create a resume for interview??

1452