Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What are the advantages of using distance protection schemes as opposed to normal overcurrent/ earth fault protection on high voltage feeders.

Eskom,

3219

What is x/r ratio?

1 3843

Can you explain operating principle of Inverse Definite Minimum Time” (IDMT) relay

2 12811

Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.

1720

how do you find making current and breaking current of the circuit breaker

1 3351

how you connect the induction motor first in star and then delta in star-delta starter

1 3056

what is the differences between single phase ind. motor and three phase ind.motor?

3 4839

what is the difference single phase and 3phase starter

1 4095

at meter room 50 hrc switch installed,but there are not get earthing proper,so what happen?and 11kv transformer out put going in to hrc main 400a three nog each? so earthing is require for all switch? (some customer made earthing at there home.)

Ebrahim Textile, Siemens,

1611

?? how to calculate lighting system ????

L&T, Synergy,

1 3046

what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..

Sony,

1632

how to check avr of dg set of 125kva

2279

what is the difference between arc and spark

2 5838

you have a 2 tonne ac that operates for 2 hrs daily what will be you monthly bill (this is complete question asked nothing else was given)?

1 2884

how to measure winding resistance of single phase motor?

Adani, Dodsal,

1 2474


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Un-Answered Questions { Electrical Engineering }

There are Two questions about Steam Turbine Generator... What is HRSG bypass of LP, HP used for in power generation? In particualar, in the event that fault of HP bypass, there would be STG TRIP in operation but none on the LP bypass fault...what's the reason ?

1977


What is meant by positive and negative feedback?

764


What is the temperature PROFILE OF A FLUID W. R. T. Distance from a sphere to which it is IN CONTACT which is at constant temp.?

1785


what things to be considered when designing UPS

1428


Why hydropower is called renewable source of energy?

722






for 11KV OH system what will be typical per KM "R" "L" "C" parameter. for 33KV OH system what will be typical per KM "R" "L" "C" parameter. for 33KV UG system what will be typical per KM "R" "L" "C" parameter.

2127


What are the criteria shall be considers for sizing Fuse and MCB? If the rated current is 10Amps what should be the fuse size / MCB Size?

1193


HOW CAN WE DECIDE THE SUPPLY VOLTAGE FOR MOTOR ACCORDING TO ITS RATING(IF ANYONE KNOWS GIVE IT WITH EXAMPLE AND ITS CALCULATIONS)

1634


My question is abt backlog.I had dropped one subject in my second year, and completed this subject in the 3rd attempt, so how many backlogs i have got?1 or 3?plz sujjest the answer as soon as possible

1740


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

2694


How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?

1574


Define what is difference between fuse and breaker?

796


What is the actual calculation for transformer short circuit test?.

2120


who can measure the size of power cable?

1744


What is the formula for calculating no-load current?

762