Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

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

22 35483

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

Summit Power,

9 17071

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

1 5357




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

4 13169

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

ABC,

5 6377

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

12 11568

specific gravity of a battery?

6 8874

In India which type of PLCC IS used?

Ford, Cipla, Jayashree,

2 7450




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

Engineers India Limited,

15 35045

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?

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

5 21624

What is Ohms law?

L&T, KPTCL, College School Exams Tests,

28 15620

how am i achived model paper to prepratio for bhel exam

Bhel,

2 4036

What is the meaning of TRI Vector meter?

ABB, Excel Power Switchgear,

7 22919

how to calculate knee point voltage of current transformer?

Bhel, Bhilai, Jackson,

20 113349

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

Bhilai,

24 21135


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Un-Answered Questions { Electrical Engineering }



699


How to know vacuum in vacuum cylinder of breaker in working condition

545


how does directional relay work incase of ac ?

127


how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?

724


How Self works in DG set

467






What are :- AC Distribution Board (Single & Double Front) DC Distribution Boards Distribution Board LT Breaker Panel.

721


Good morning: I'm looking for some informations about the OLTC or the LTC: I wont to know what the function of the tie-resistor in during the operation of reversing/coarse operation Cordially

730


How many types of oil using in H/T & L/T Oil Circuit Breakers. need Explenation ?

1401


draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words

17424


WHAT DO YOU MEAN THE DIFFERENT TYPE OF CURVES OF RELAY LIKE STANDARD INVERSE, VARY INVERSE, NORMAL INVERSE, LONG INVERSE ETC....

701


TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.

3652


What is the lockout relay

219


what does mean of RCT and STR in diffrential CT?

2891


what is RFCT and Insulgard Relay & It's function?

708


How will A Medium voltage circuit breaker(11 kV voltage level) operate under short circuit fault condition whether It is having short circuit release like Low voltage circuit breaker or relay should be given?

518