Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is inverse definite minimum time lag relay? Where is it use?

TATA,

2277

How we calculat the NGR of 3phase Generator, Our generation voltage 11KV

MSP, Toyo Denki,

2869

What is the current flow in 230v ac supply ? What is the current flow in 415v Ac supply ?

1 5606

what is the value of the earth resistance in mositure place

HCL,

3 4813

if u give d.c. supply to transformer primary then what happen.&why??????????????

DCS, DRDO, HCL,

4 7989

how to calulate transformer secodary fault A?

1 3592

why phase always came one direction in 5pin socket(right hand or left hand) which direction and why..........?

Alstom, L&T,

4 14378

A 40 kva transformer has a core loss of 400W and a full load copper loss of 800W. What is The proportion of full load at maxmimum efficiency?

1 4751

The iron loss in a 100kva transformer is 1 kw and full load copper losses are 2 kw, then what is maximum efficiency occure at a load?

MPSC,

3 7313

What is the Difference between Ac Drives and Dc Drives? According to application, speed, Torque, cost, Reliability, Construction, Motor etc... Thankyou !!!

IFFCO, IIT,

1667

what is the use of terminals in transformer ?

Core Solutions, Honeywell,

1 4319

which is the best, A/C DRIVES or D/C DRIVES for cranes,...... ...and why......?

Alstom,

2 4812

What is the full form of CNC in electrical mechines.......?

Alstom,

1 7498

How one may guess the direction from which the distribution line is incoming if there is no pole plate on poles?

1663

what is power factor

Exide,

5 7089


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Un-Answered Questions { Electrical Engineering }

I Have 3 Phase 10 KW AC Alternator i found one phase weak, so what will be the reason & what action shouls i take to rectify the same.

1554


2 v/500amp/hr to 1.80vpc at 20 degree celsious 2v/5ooamp/hr to 1.75 vpc at 77degree farren .this is the capacity of a battery .what is the meaning of this . can i get a detailed explenation

1854


What will be the diameter of pipe between conservation tank and transformer

1442


i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance

2035


What is the Designing & Selection Procedure for a DG/Transormer of rated capacity?

1687






How you will determine the volume of oil in a particular Distribution transformer.

1430


any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

1611


a 100mva,400/200v transformer has leakage impdce of 10% draws a steady state line currentof---------------

1444


as a electrical student why should i hire you?

1972


what is the difference between switchgear and circuit breakers and is there any difference between outdoor and indoor switchgear and circuit breakers , and how would you differentiate between switch yard and substation and grid station . thanks

1735


Why does the adjacent zone of protection overlap?

679


explain the function of brush less dc motor?

1568


why in the three pin plug all 3 pins are cutted ?

1521


Power factor =1.000 at factory in supply. However, PF = 0.8 at motor end. Current = 100 Amp, Voltage = 400 V. What is the power distribution loss? Can I reduce it by adding capacitor at the load feeder?

1588


What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks

1472