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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Synchrounous motor is three phase motor,but its not self starting .why?

Delta Beverages, KI, L&T, NTC, TVS, Wipro,

22 49865

Clearly Define Active,Reactive,Apparant power.Which applications used which power above metioned power?

Summit Power,

9 21117

what are the basic concept to design a out door Substation?

 1 6681

Why we call cable rating in SQ.mm.If it is 240 SQ.mm how much the diameter possible?is there any calculation ?

 4 17252

What is mean by CT Saturate? how do we calculate?

ABC,

5 9456

how to use single phase supply for a three phase equipement.

 12 17342

specific gravity of a battery?

 6 12156

In India which type of PLCC IS used?

Cipla, Ford, Jayashree,

2 10108

In Ferranti effect,Receiving end voltage is greater than sending voltage,why? can anybody tell me the answer

Engineers India Limited,

15 46284

how to calculate no. of earthing pits and their diamensions? no. of lightning arrester rods which are required to protect a building of 35 mtr and we calculate?

Dharampal Premchand Limited, FlowMore, Hindustan Zinc, Ispat, Maheshwary Ispat, NDDB, Siemens,

5 26177

What is Ohms law?

College School Exams Tests, KPTCL, L&T,

28 28282

how am i achived model paper to prepratio for bhel exam

Bhel,

2 5711

What is the meaning of TRI Vector meter?

ABB, Excel Power Switchgear,

7 29171

how to calculate knee point voltage of current transformer?

Bhel, Bhilai, Jackson,

20 149784

11kv/0.433kv, 2 mva , transformer , for protection and metering how many CT/PT are required?

Bhilai,

24 31070

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Un-Answered Questions { Electrical Engineering }

What do you mean by transformation ratio of instrument transformer?

626

what are the difference between AC lamp and DC lamp

1665

What is the difference between the impedance percent and impedance voltage ?

1688

What is the reason behind current flow(20 A) in amain earth cable of an SMDB? Is cuurent flow(45A etc) through a neutral cable acceptable?

1499

what is the meaning of WYE and DELTA in Electric meter?

3331




What is boucholz relay and the significance of it in to the trformer?

650

How is the percentage impedence of a transformer fixed at design stage???

1492

which are the criterias needed to select the kind of neutral earthing(solid earthing,resistance earthing,etc.) at various voltage levels in electrical distribution?

1496

There is air in a room . the top and bottom of the room are at constant temp. T1 and T2. DRAW THE temp profiles if a. T1 greater than T2 b. T1 less than T2

1418

What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?

2057

In the N-series schneider reclosers. What is the difference between current during fault time and current at tripping? This appears in the Event log in an event of a trip out.

1327

How to convert a two phase power into a three phase power in induction machine?

1346

We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.

1411

i want to apper for apgenco or aptransco or related can any one sugest me where can i get previous papers of thouse exams

2811

What are the advantages and disadvantages of open loop control system?

652

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