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Electrical Engineering Interview Questions

what is the avr

6304

Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer

2773

What do we use in Motor core laminations..???CRGO or CRNGO..and why..????

3839

We have AC-transformer 110/13.8kv,40MVA.If DC-Voltage=110kv is applied in its primary what will happen?

5390

what is the opencircuit tes &short circuit test in transformers ,why you need this test, in poen your connecting which votmeter why?

2934

in dc suppy frequency is zero why? if dc frequency is zero how to exist dc transients and ac transients

1176

4842

what is class of SPD and dittels of all class ?

1174

if we want to convert the two 12 V DC batteries in parallel for UPS ? what would be the result ? which is better for a UPS , connect two batteries in series or connect them in parallel ?

2550

what is the diffrence between single phase and three phase

6853

what is the formula for converting KW into KWH ?

5090

what is meant by dielectirc medium? what is the dielectirc value of air and water???

ISRO,

3636

How to calculate cable size between battery charger to Battery ?

L&T,

2704

WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION?

L&T,

12494

WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?

L&T,

1254

Un-Answered Questions { Electrical Engineering }

i have completed deee and i've (June2012-feb 2015 experience in electrical maintenance in pvt ltd company.company having HT & LT electrical power.how to apply electrical C-license ,NOW I was resigned my job,what are requirements of applying for c-license

882

Why sometime AVR and sometime Booster coil is used in Alternator? what is the diferance between AVR & Booster coil due to which they are selected

2108

Why ground terminal is used in pot meter 10k ohms

1073

In my power station 220 volts dc battery set. they coneected 84th cell taped

843

75 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?

2874

PAC and simple Ac different

535

What is primary and backup protection?

263

please tell me how a surge protector work on a DC 48Volt.? please describe briefly.

996

hi, i finished b.tech eee in 2008, im worked in dg sets mfg company , now i left job in 6months back, now again i want get job core side, how can i get? is there any couses we have learn to get better oppurtunity? /

1025

What is Plank's Law?

284

EXPLAIN THE TRANSFORMER MAINTENANCE?

1332

why we use condenser in the thermal power plant, althrough the same vapour will be again heated

3175

magnetizer priciple

1170

Hello Friends, How can we recognize the CT Star Point is S1 or S2 in case of Electro Mechanical Relays and what is meant by Restraining coil in relays and what is the purpose of that.. thank you in advance..

1246

our industries ht line so power fluctation(once drop of power please rectify causes

1118