Electrical Engineering Interview Questions
Questions Answers Views Company eMail


What is the max demand on your transformer and your company?

Bhel, JLL, MNC, HPL, Lemon Tree, Tata Power, TATA, Torrent Pharma, IOCL, Core Consultants,

8 22716

What is the power factor you maintain at ur organization?

Microsoft, Wheels India, Cummins, Powergear, Suncity Strips, KTC, Secure Meters, Exide,

39 43107




How do you connect the capacitors on polyphase circuits?

L&T, Transco,

9 17946

What is the make of breakers, transformers, generators? What are their capacities and ratings?

Bharat Bijlee, GHPPL,

3 13374

Is your generator is automated or manual if so do you know the circuits?

RRB,

6 10756

What are the different sizes of cables for H.T and L.T side of supply?

Bhel, Karthik Industries, Lanco, Torrent Power, Shilpa Electrical Engineers, Nedco, BSES, TATA,

7 42915

Do you know how to measure the earth resistance? if so explain it

MSEB, ABB, JLL, Dalkia, Genpact, Sical, L&T, University Exams, IOCL, College School Exams Tests, Saraca, Electrical, Telecommunications, BridgeStone, Dalmia Group, DEC, HEC,

41 113471




What is meant by H.R.C fuse?

Taj Group, Gas Projects, GSCE,

39 149360

What are the different protection systems takes place on control panel board?

BSNL,

6 13266

What are the different ratings of the fuse units for different distributions at your organization?

UPPCL, TATA,

2 6575

What are the different protection systems used to protect the transformer internally and externally?

15 28713

What is the rating of your substation and what are the different types of substations?

Bhel, UPPCL, NTPC,

5 23551

What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

TATA, Pharma, TAAT, Jindal,

20 65887

How do you maintain the earthing resistance?

Birla, Ford, JLL,

11 24836


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Un-Answered Questions { Electrical Engineering }

how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.

466


How do I calculate/select Droop CT ratio for various capacity of generators?

1291


why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?

1352


control & auxilary circuits used for circuir breakers

587


what is mean by transition resistance of transformer?

2453


Make a list observation on Transformer?

955


Can 33kva/415v transformer be run underground? If the answer is yes why and if the answer is no why?

273


1.what is the funtion of chiller primary & scondary pumps. 2.what is the use of distribution lines & Types. 3.what is the use the thermal power stations & how much capacity.

622


Briefing the effects of ASR and ACR of a double closed-loop speed regulating system.

551


What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

111


If we impress a dc voltage of 230 V on an unloaded 230 V, 50 Hz transformer it wi A give high secondary voltage B burn out C give secondary voltage as per K D none of these

478


main difference between ac and dc?

274


How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula? Equate Petrochemical 0 1 how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec. 0 1 What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding? Equate Petrochemical 0 1 What is required of exietation to the alternater. 0 1 why star point of HT motor not earthed? Equate Petrochemical 0 1 Why we are getting low voltage in star connection? Equate Petrochemical 0 2 What's ND relay & it's functions? Equate Petrochemical 0 2 How instantanious short circuit current is calculated? its formula? Equate Petrochemical 0 2 What is servo Motor? What's the advantages of this motor over Induction motor? Equate Petrochemical 0 2 What is core CT & it's function? Equate Petrochemical 0 3 what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY L & T 0 4 What is required of exietation to the alternater. KNB 1 23 what is the design voltage for 6.6KV 2000 KVAR HT capacitor? Consultancy 0 3 Pls explain about vfd control?Where it is used, Give some example? siemens 1 22 Please explain me abt PQ diagaram in the power sector. 0 9

603


what are the ''pitting rings''and how cn they be controlled in a series generator

500


State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp

557