Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how calculation to be done of cable size/o.h. conductor size of 11kv h.t.for the load of 2175 kw

Shell,

1 4879

6 MVA transformer secondary is rated for 725V at no load. The incommer ACB is rated at 690 V, 3200 Amp. Would there be any effect on performance of ACB due to lower voltage rating?

5 5331

power is the product of voltage and current.so we can measure the value of power just by using ammeter and voltmeter.......then why do we use a wattmeter?

5 5359




WHAT IS THE MEANING OF 'UPF'&'LPF'.... HOW CAN WE DEFINE IT? WHAT IS THE VALUE/RANGE OF EARTH WIRE RESISTANCE USED PARTICULARLY IN HOME....

2 17610

Generator protection &generator test

1 4536

transformer test

4 9658

i want to know about torque of slip ring induction motor

Ambuja,

909

I HAVE CONSUMER WHOSE POWER FACTOR IS 65% I WANT TO INCREASE IT TO 98%.HOW TO CARRY OUT?

7 4729




OUR METER READER TAKE READING OF INDUSTRIAL CONSUMER.THEY ALWAYS ASK HOW TO INCREASE POWER FACTOR FROM 60% TO 99 % TO AVOID PENALTY OF POWER FACTOR.

3 4788

what is cogging and crawling

2 4836

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

1 2808

how many earthing should need for UPS, where its connected

HCL,

7 6517

1.what is electricity 2.what is electronice 3.how many modules 4.five electrical component with symbol 5.five electronice componene with symbol 6.how convert 220v.A/C to 24v/DC 7.220V.WAIRING DIAGRAM OF AMMETER/VOLTMETER/OHMMETEER

Hatsun,

1 2447

How to connect frequency meter in metering circuit?(single phase and three phase frequency meter)

3 5483

How to connect frequency meter in metering circuit?(single phase and three phase frequency meter)phase to phase or phase to neutral

ABB,

7 21610


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Un-Answered Questions { Electrical Engineering }

The Q-facr o of a coil given as wL/R. what will be shape of Q versus frequency graph.

732


what is the circulate the diesel in DG in side pls tell parts name and picture with circulate the diesel

736


what is mean by restructuring power system?

650


As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

2292


plz explain the auot-reclosing circuit in electrical engineeing

1151






what are the parameters plays a major role in Potential transformer Burden calculation??

861


We are preparing another project which involves Waste heat recovery from a 1 MW GE Engine. The Engine in particular gives out flue gas at 487Deg C with a flow rate of 5650 kg/hour and this can be cooled to 180 Deg C. This gives a thermal output of ~ 594 KW that is available for input to VAM via heat exchanger / boiler. Additionally 581 KW will be available from engine jacket water (temperature profile 80/ 80 Deg C and a flow rate of 50m3/hr) Our estimation is that 300 TR of cooling is possible with a suitable VAM machine(s). Please advise what is the most suitable arrangement with maximum TR and min Capital expenditure. plz reply me as early as possible

715


According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor

818


WHAT IS THE TOTAL POWER GENERATION IN CHHATTISGARH?

728


I am using submission of two ct in one and half scheme for 67/67N protection. Both CTs star point is grounded separately near ct box.Will two point ground give wrong tripping to 67/67N during fault or no matter.

850


whether fibre optic cable in high voltage earth conductor is used for protection circuits

457


why do we not use equivalent voltage source in negative sequence equivalent ckt.

861


While testing a ZCT what parameters have to check or measure?

1021


sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"

653


how synchronous condenser is used in place of synchronous generator with out negotiating IEEE standards? Can i use 3 generators as synchronous generators and 2 generators as a synchronous condensers in an IEEE 14 bus system with out disturbing the standards?

831