Electrical Engineering Interview Questions
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which fault current is maximum: 3 phase short circuit, LG, LL or LLG?? why?? in one of the problems that i have solved, 3 phase short circuit current on an unloaded generator came out to be less than the LG fault current. can anybody please explain why.

Bhel,

2 6684

Sir I want questions for rrb sec technician gr III (electrical)

RRB,

1 3907

wat is the difference between BE &BTECH.

8 6961




what is meant by ceiling voltage, ceiling current?? pl reply asap

4 16576

How regulator control the fan speed?

4 19749

i need bhel question papers.

Bhel,

5 7975

generaly all power generating devices is expressed in KVA or MVA then why power ststion is expressed in MW

6 9573

why skin effect is decreases with decrease with frequency? why skin effect occur

Kirloskar,

5 8740




Can anyone tell me how a 12v battery is transformed to 20,000v at the spark plug

6 10035

What is the difference between reciprocating & rotary motors in AC units, which is the best one in terms of operation.

MacLellan,

2 9727

how to select cable size?

7 17804

what is the different betweem earthing and neutral?

8 7045

what is the term of desruptive voltage

Bhel, Energy Infratech,

5 6320

can induction motor run over the rated speed ?

ACC,

12 9818

Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum capacity of motor in KW that can be connected and started at a single moment? Also explain about any calculations and formulas used in deriving the same.

4 4593


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Un-Answered Questions { Electrical Engineering }

What current position are you holding in your current company?

797


what happen when power factor of 2 parallely operated transformer become equle?

888


What is relation between transmission lines & Communication lines ?

950


how many parameters can integrate with fire alarm basically ?

761


How to calculate loses in transformer of 160 KVA ?

441






How o select the electrical fuse?.What are its characteristics.How to select the material od fuse?

724


Why electrical power generation and transmission done in 3 phase system not more than 3 phase ?

1788


is ac supply can store

699


What are protections for dty type transformers

624


what are the preventive maintanance actions taken for air circuit breaker? please answer me

735


I Want randstand placement papers

457


HOW TO SET THE EARTH FAULT SETTINGS IN ACB????????????

676


in basic 2 phase will short means tripping the power but spot welding 2 phase shorting but not tripping it will welded why.....(Q)

703


What is the basic of DTH.

958


Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.

812