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When a square wave is applied to primary of a transformer then what will be output wave form of secondary ?
1 2150why AC signals are represented by sinusoidal waveform?WHY other waveforms not used for representation
2075What 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 10501How 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 194734Post New Electrical Engineering Questions
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hi frenz,its aswathy.i hve aplied for the hpcl test on feb,pls send the test patern & the placement papers as soon as possible. mail-id :kjaswathy@gmail.com
how was your last weekend.
HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com
Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.
How can we calculate the motor frame sizes?
Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?
What are the different methodes for calculating the short circuit Current?
What is the basic principal, by which DC voltage level is increased more than the supplied AC voltage during conversion. As upto AC level it is contorrled by firing anlge but after maximum level how is it possible.Please clear picture. OR we have to supply the higher level AC?
sir& friends i want the collection of recent quetions asked in interview of top most companies please send me on my email san.jsr@hotmail.com
what is the condition for YnD11
DRAW ACIRCUIT DIAGRAM OF 100 KVA 415V/55-0-55V DELTA TO STAR TRANSFORMER
can you send me the placement papers of electrical engg. from companis like NTPC,DRDO,IOCL,HPCL,BPCL etc.?If,plz send as soon as possible.Thanks.
1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.
plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?
