how to calculate short ckt current of trafo. ex.3-ph 3MVA trfo. 11/440, impdence voltage=7.25%

1 Answers  

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what is the relationship between phase & neutral

0 Answers  

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It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

0 Answers  

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what is relation between vector group of transformer and its load hormonics?

1 Answers   Sanmar,

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Why only three phase power generation are load are used

2 Answers   BARC,

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what is the function of switch gear ?

10 Answers   Exxaro,

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How the power factor is more in high speed machines

1 Answers  

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Why the Motor takes High Current in Starting time?

5 Answers  

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we have two motors 1250kW,6.6kV to be coupled on the same shaft ,so please provide assistance for their synchronisation.

0 Answers  

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Hi.. I am a BE GRaduate in E&E. I have 8.5 Experience in Tendering & Estimation field. I have done SAP SD course few years back. But due to some reason i failed to get job in that field and continued my own field. Now I am thinking of changing into SAP seriously. How should i go ahead???

0 Answers  

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what are the reasons of low voltage during start the DG?

1 Answers   Godrej, Tata Power,

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Why we called L-G fault as line to ground fault why ground? suppose if a line falls on building roof then can we called these fault as line to roof fault? please explain why ground term is used here?

3 Answers   Bhel,

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