Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is mean by STUB protection?

1644

what is the function of statics switch in ups and tell me parts

Dalkia,

1598

which is chemical used as in ro water what is difference betweeen multi grade filter&dual media filter

Dalkia,

1703

why trasformer rated in kva why should have to maintain pf in our site 0.9

Dalkia,

3 4519

which pump used in WTP explain the function of VFD how to dtermine capacitorbank of capacity one plant

Dalkia,

1540

whydoes the p.f of diesel generator always be 0.8 explain how will you determine the shortcircuit capacity of network

Dalkia,

1 3120

what is the difference between DOL starter&star-delta starter& automatic star-delta starter

Dalkia, GSK,

2 6670

do you know measure the earth resistance?explain

Dalkia,

1 3775

how much mininmum length required to conduct a DC Hipot Test on 33kV AC Cable with 45kV DC? Is it 20meter or Less then 20?

ABB,

1689

3phase 4 wire system is more reliable or 3 phase 3 wire systems?

4 5082

what is the clearances between phease to phease & phease to earth in 400 kv transmission line?

Lanco,

1 3700

why delta delta connection generally not use in transformer

Lanco,

4 8386

What is Goerges phenomina to start SYCHNOUSMOTOR?

1 3386

why transformer are not used in D.C SUPPLY

5 6949

how to calculate short circuit calculation of the transformer by usuing the percentage impedence? formula needed.

L&T,

2 5730


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Un-Answered Questions { Electrical Engineering }

what is the use of current transformer in power transformer secondary side.?its connectyed in WTI

1311


How many kinds of E.L.C.B and how to work E.L.C.B

1669


what are the precuation should be taken ahen installing power transformer,circuit breaker,current & potential transformer

1671


What is meant by rotor?

889


what is the formula for efficiency of francis turbine and generator for hydropower? what is best way to select francis turbine and generator?

2072






why ss stablity limit is more transient stablity limit?

1727


mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....

1557


What are the advantages and disadvantages of closed-loop control system?

787


is there any device that works properly accept relay, it may be fuse but if i want fuse of 33kv 300 amp it is avaliable, pls give me details

1641


How to calculate earth wire load by formula

2049


Why we are use dol starter up to 10 hp

1013


Why there are some equipment(i.e:TV) that using 2-pin plug instead of three? What happen if there is current leakage? Are we going to get electric shock??

1799


In single phase ac ups supply when current is measured with tong tester neutral current is found more than phase current.What is the reason?

1679


What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?

2562


we have a lot of model of rectifier but thyristor rectifier is the most rectifier that use in power system. Do you know why this rectifier is used?

1388