Electrical Engineering Interview Questions
Questions Answers Views Company eMail

When a square wave is applied to primary of a transformer then what will be output wave form of secondary ?

1560

WHY DOES NEUTRAL DO NOT CARRY EVEN THOUGH IT CARRIES RETURN CURRENT?

1 5276

why AC signals are represented by sinusoidal waveform?WHY other waveforms not used for representation

1442

explain the working principal of the circuit breaker?

5 9602

What do you mean by pf of a generator? Power factor purely depends on the load (wether inductive, reactive or unity) then what does the pf mentioned on the generator nameplate means?

3 8895

what is the difference between diode and zener diode?

4 6797

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq.mm ? with formulas ?

Bajaj, Eagle, Godawari Power and Ispat, Havells, L&T, Mascot, Polycab, SGML, Sterling Wilson,

12 188318

how we can calcultae the short circuit level for bus bar

Jaiprakash, Panorama Apparels,

1701

what is the difference between indoor package substation and outdoor

3 12162

what is package substation.how many types they have

ABC,

1657

why we use only sine wave in ac why we do not use other wave forms

BARC, NTPC,

21 44890

name the famous power plants in ap and vwhere it is located with capacity details

BARC,

1 4183

why the capacitors works on ac only

5 17347

how do u get less voltage in star connection

BARC,

4 7865

what happens if i connect acapacitor to a generator load

5 12938


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Un-Answered Questions { Electrical Engineering }

What is the purpose of using busbar mounting fuse?

1580


How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?

1493


What is PEC??Applications........

1472


As we use capacitior bank in 3ph ckt for improvement of PF, why not we use capacitor in single phase domestric use, at our house their are many inductive equipments,like fan,mixer,tube choke,air conditioner they also draw PF... by using capacitor can they improve PF. if yes--what are advantage and how to connect a capactor in single ph,and which type of capacitor if no- what are disadvantages.

1360


Why corona leads to production of Ozone and glow of the color VOILET?

1481






Difference between On Line capacitor and Station Type capacitor.

1594


what is the difference between switch yard to residential area.and how much required it.

1246


Should power factor be low or high?

679


testing of Vector Group – YNaoD II

2426


what about SAP/MRP regarding manufacturing of electric motors and all drives?

1554


defult setting in p220 micom motor proction relay for 11kv,640kw,f.l.a.-40a,1440rpm ht motor?

3189


How can eliminate noise problem inside temperature controller temp. variation due to contactor chattering problem.

1172


what is the function of impulse relay

1973


give me applications of sequence bridges . (used in 3 phase un balanced systems)

1424


Do Phase angle measurement have any application in freq/harmonics measurement? If so how?

1435