Answer Posted / ragunathan
Construction wise
1)In door
2)Out door
3)Oil imressed
4)Dry type
COOLING TYPE
1)OIL NATURAL AIR NATURAL
2)OIL NATURAL AIR FORCED
3)OIL NATURAL WATER FORCED
PURPOSE WISE
1) POWER TRANSFORMER
2) AUILIARY TRANSFORMER
3) CURRENT TRANSFORMER
4) VOLTAGE TRANSFORMER
CONNECTION WISE
1) YY0
2) YY1
3) YY11
4) DD0
5) DD1
6) DD11
7) YnD1
8) YnD11
9) DYn1
10)DYn1
| Is This Answer Correct ? | 8 Yes | 1 No |
Post New Answer View All Answers
what is an unbalance in acircuit? in a three phase 3wire circuit how an unbalance will come? in a three phase four wire system how an un balance is coming?
Operation of isolators.
what happen ehen synchronisation is done at below rated speed
what is the minimum requirement gigaohms for the insulation test using 5kv in 300mm xlpe cable
What is the use of oil in transformers?
Explain what is rated speed?
What is the minimum IR value of HT/ LT cable? Pls post separetely!!!!!
A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.
What is the power factor of a transformer at no load?
What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side
Starting Time of LT & HT Motor
Is it possible to measure the voltage of a battery from a single terminal?
what is the function of choke in the flourcent tube lights and why the colour is in white mostly in flourcent tube lights
hi frnds...pls send me aptransco previous papers .....pls..pls,,,(madhar.rocking@gmail.com)and suggest me some websites
what is the efficiency of thyristor