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 ?

782

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

1 3918

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

645




explain the working principal of the circuit breaker?

5 7099

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 6661

what is the difference between diode and zener diode?

4 4732

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

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

11 150548

how we can calcultae the short circuit level for bus bar

Jaiprakash, Panorama Apparels,

880




what is the difference between indoor package substation and outdoor

3 9488

what is package substation.how many types they have

ABC,

796

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

NTPC, BARC,

21 32774

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

BARC,

1 2800

why the capacitors works on ac only

5 13049

how do u get less voltage in star connection

BARC,

4 5532

what happens if i connect acapacitor to a generator load

5 9345


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Un-Answered Questions { Electrical Engineering }

state the working principle of incondenscent tube?

687


What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

790


WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

864


what is the calculation method to design core and winding of a 200kva 3phase distribution transformer?

1154


Is RTCC panel needs any control supply.

622






at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.

356


hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.

1491


how we can find of current direction(supply comming/out going direction) when a transmission line passing through sides.

1015


what is the importance of Partial Dischage test for Electrical Equipments

616


Can anyone tell me some hints about what type of questions are asked by the interviewer by an Electronics engineer when company is installing an IPP and wants a team of engineers?

958


WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >

634


errection check list for transformer maintenance

1160


what will happens if one phase is missing for 33/11kv power transfomer and why?

1319


is it possible to have dc motors on single chip

442


what is the use of surge suppresser in 33 KV incoming panel. where it must be installed,inseries with incoming cable surge suppresser must be at incoming of the breaker are outgoing of the breaker

3315