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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED

L&T,

4 5417

What should be the value of earth resistance for an instrumentation/electronic circuit? As per which IS/IEC Code?

IOCL,

3 6501

why should we place 9KV lightning arrestors in 11KV substation ?

DOL, ISRO, Matrix,

9 40428

What is the AVR in DG & its functios

Godrej,

2 32087

what is the difference between NC & CNC machine.what is the difference between equipment & machine tool

2 5431

How to prepare electrical preventive maintenance plan & shedule of machine tools.

2 5750

what will happen if the frequency supplied is more than the frequency of the instrument...?

3 4055

WHY TRANSFORMER IS MEASURED IN KVA?

10 22419

hey guys i scored 910 on GRE and 67 on TOEFL respectively.I have an aggregate of about 74%in my B tech.For which colleges should i apply for an MS program in electrical engineering.I am looking for colleges in NJ,SC,NC,GEORGIA, NY. Please reply with a good response.....

1336

what is let through energy of mccb

2 21501

what is V0/V rating of cable

1 3288

what is meant by excitation current & armature current ? where its produce & how we can calculate ?

1453

last 5 year rrb allahabad junior engg electrial engg question paper

RRB,

2377

if u have single phase load (un balance) and the main power cable is 3.5core means netural is .5 of phase and can the three phase current make the return paht in .5 neutral.

1 2220

what is the maximum Load capasity in LV-Panel,MDB,SMDB & Final DB'S in Electrical disribution system?

Sterling,

2 24860


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Un-Answered Questions { Electrical Engineering }

DEFINE BREAKING CAPACITY OF BUSBAR & HOW IT IS CALCULATED?

4594


which model T or pie model is prefarable in power syatem

1248


i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.

1375


how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

1352


what will happen if frequency is below 50 hz?

1340






where lt & ht capacitor used

1592


How generator NPS(NEGATIVE PHASE SEQUENCE TEST)TEST WAS DONE? PROCEDURE WITH DETAILS?

1509


ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

1285


How to calculate energy stored in a capacitance

483


Testing procedure of DG alternator stability test

764


before synchronizing an alternator,power factor is leading ,why?

808


Why 30kw 40 hp 4 pole 3ph induction motor over heated?any steps on reduction in heat?

1075


How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

1561


Anyone who can recommend an equivalent to Envirotemp FR3 of Cooper?

1331


Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?

1620