Electrical Engineering Interview Questions
Questions Answers Views Company eMail


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

Bhel, CBRE, Core Consultants, HPL, IOCL, JLL, L&T, Lemon Tree, MNC, Rashmi, TATA, Tata Motors, Tata Power, Torrent Pharma,

10 35843

What is the power factor you maintain at ur organization?

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

42 57671

How do you connect the capacitors on polyphase circuits?

L&T, Transco,

9 26495

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

Bharat Bijlee, GHPPL, Tata Motors,

4 18518

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

RRB,

7 16189

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

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

7 54699

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

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

42 131562

What is meant by H.R.C fuse?

Gas Projects, GSCE, Taj Group,

39 164244

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

BSNL,

6 18312

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

TATA, UPPCL,

3 10129

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

16 36581

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

Bhel, NTPC, UPPCL,

5 29226

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

Jindal, Pharma, TAAT, TATA,

20 80810

How do you maintain the earthing resistance?

Birla, Ford, JLL,

13 34463


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Un-Answered Questions { Electrical Engineering }

what are the reasons of CT circuit faulty in busbar protection scheme?

440


What consists of 2 or more thermocouples to be connented series?

979


what is difference between isolation and ultra isolation transformer?, what is the method of testing ?

3191


Why efficiency of generator is higher than motor at a particular load?

1145


why would amp draw on neutral wire be as much as amp draw on the hot leg.

1036






I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

990


i have been tasked with a design of protection, metering and control(PMC) relay panel extension to accommodate all PMC relays.There is an already existing panel where this one will be built.What are the design aspects for this kind of project? thank you.

1068


What is conventional thermal current (Ith)

2836


how we can calculate the efficiency of a diesel generator ?

682


if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?

407


what is sustainable current of any conductors . a bare busbar or pvc cable has different sustainable current .

877


in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses?  the second question is-generation is depends on LV winding? or LV winding design for generation voltage?

737


types of central Air conditioner plant?

1119


1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.

897


what is the purpose of shading ring or shading coil in electrical equipments.

3302