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 ?

817

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

1 4000

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

679




explain the working principal of the circuit breaker?

5 7207

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 6751

what is the difference between diode and zener diode?

4 4849

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 155407

how we can calcultae the short circuit level for bus bar

Jaiprakash, Panorama Apparels,

906




what is the difference between indoor package substation and outdoor

3 9678

what is package substation.how many types they have

ABC,

831

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

NTPC, BARC,

21 33442

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

BARC,

1 2856

why the capacitors works on ac only

5 13333

how do u get less voltage in star connection

BARC,

4 5632

what happens if i connect acapacitor to a generator load

5 9596


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Un-Answered Questions { Electrical Engineering }

how to compute kvar in substation feeder to improve power factor and sending voltage

890


Hi everyone, I'm Lachuu, recently joined automation company as PLC Engineer. I have certain basic question, I request all big gurus and seniors to answer these question. Because this will be very helpful to me as well starters like me. How to design a control circuit (ex: pick & place - my current project) Yamaha robot PxYx series controller RCX222, using 6 cylinder double acting, plc keyence kv p16r 2 expansion unit for input and output each. How to select panel terminal mcb elcb powersupply. My main concern in some projects how to select dc power supply, mcb rcb(I came across dif bt b c d curves, but stil confusing, pls help me :-(. I would really appreciate all who are going respond to this question.

701


can some one clearly explain why -48 volt DC use in telecom site????

224


why in a swquence network representation, the negetive sequence generated voltage is taken as zero?

638


How can calculate the rating of a servo stabilizer for given a specific load

2186






If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?

730


what is destructive and non-destructive testing of welding

378


how to carried out tan delta test in 11 KV alternator ?

1652


standard earthing rating for power line..

776


Explain Even and Odd signals?

528


How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?

872


rajha power sector details

756


what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value

850


i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?

337


different aspects of voltage stability

676