Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the differance between negative dc voltage and positive dc voltage because some circuit uses -24,-5,-12,- 15,volt dc supply

NTPC, Hero Honda, Suzlon, eLab, Teradyne,

10 26864

What is the meaning of maximum demand

MN Dastur,

21 41857

what is star&delta connections?

5 7626




hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.

1734

What is the use of centrifugal switch in 1phase induction motor? Why is it so called?

2 5570

What does negative slip of an induction motor signify?

Tata Elxsi,

10 35055

In step down transformer (415/200V),mistakenly secondary side is connected to 415V for some hours, what would be result of this condition?

GAIL, Essar, Vizag Steel,

19 15419

WHY IS THE SIZE OF HOLE OF THE EARTH POINT IN THE PLUG POINT BIGGER THAN PHASE AND NEUTRAL

Jindal,

7 8915




What is the meaning of BUS?

KLG Systel, CII,

19 15241

What is the meaning of GRID?

21 26933

What about Reactive power.and role of that one?

7 5985

The importance of resonant filters in converters?

1 1663

How much Fault current can be contributed by a motor?

4 4778

In any Industry, Which voltage level either 3.3kV or 6.6KV to be chosen? Then I would like to know ,Is there any cost consideration or Rating of motor?

5 6857

what r the advantage of selecting micro controller type tripping of circuit breaker than relay type tripping?

BARC,

5 4972


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Un-Answered Questions { Electrical Engineering }

While testing LA mast,What are the parameter limits ?

709


what is the condition for YnD11

1208


Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?

790


i installed 100kva ups. what KVA genset they should provid in input side? plz any update formula or ans with reason.

836


3- What is the target from Zero Impedance, Single Phase Imp., S/C Imp. and magnetic balance tests?

661






how to calculate the power factor when instantaneous voltage and current has harmonics in it ?

676


The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?

314


Why cables and busbar both needed in LT Panels?

968


WHAT IS THE DIFFERENCE BETWEEN AN ACB & mccb 7 WHAT IS THE CRITERIA WHEN TO USE WHICH OF THE TWO

1058


why lightning arrestor are made in two stack of insulator but why not cvt

747


what is the saturation point of crgo lamination.

819


What is FM200 Gas??Applications........

1042


How colour picturetube works & how many year it will works.

712


How convergengr of nr method is not dependent on selection of slack bus and how gauss siedel method depends?

497


if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please

706