1. what is the power factor of a purely inductive load? 2. Which type of transformer connection is preferred in case of power supply transformers? 3. In power transformer usually which winding is closer to the core? 4. what will happen to the generated emf if the no. of poles of an alternator is increased?
5 45951. what is the power factor of a purely inductive load? (i) Zero (ii) Lagging (iii)Leading (iv) Unity 2. which type of transformer connection is preferred in case of power supply transformer? (i) Star/Star (ii) Delta/Delta (iii) Star/Delta (iv) Zig Zag/Star
2 4415what is the power factor of an inductive load ? (i) Zero (ii) Lagging (iii) Leading (iv) Unity
5 6690Can we parallel lise the secondary side of the two similiar transformers with same voltage ration, imp, but with different vector groups.. ( for ex. 11 KV / 6.6KV two trfs but different vector groups can we parallelise both of them ,, what happens if we parallelise them
1 2983what are the usual topology of transformers at different substations in the power system and why that particular topology is choosen. what are the limitaions of that topology?
1598if a damaged 500kva transformer with %impedance 2.6 is replaced by two transformers of 250Kva with different % impedance will they be able to catter the load. what will be the ratio of load on the two transformers if the % impedance is in the ratio 1:2
2 3613Post New Electrical Engineering Questions
Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?
Which device is used for the source of emission of electrons in a crt?
Discribe type of fault in DOL and stardelta startor.
advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor
difference bewteen reverse current and alternating current
what is the formula for hv test for cable and circuit breaker..????
what sort of general awareness questions are asked in o.n.g.c entrance exam?????????????????
Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????
How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?
If symmetrical fault occurs at the terminal of a synchronous motor then how the motor will act...explain it..
what is the mechanical safety of DG ?
Why back emf used for a dc motor? Highlight its significance.
On 400 amp factory load how kvarh capacitors provide
how to calculate the cable current ratingand and how much of distance the rating will be ok will the distance is incresed what the action we take
does buccholz in a transformer use batteries
