How can I calculate the trnaformer effciency at different loading condition?

2 Answers  

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How to test the vector groups of 3 winding transformer & phase displacements

2 Answers  

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what is the order of mgnetiation current in a current transformer of 1000A/1A ratio?

2 Answers   Power Grid,

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WHAT IS MEANT BY INSULATION CLEARANCE IN VACCUM?

0 Answers  

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what is differance between dirty earthing and clean earthing and their applications

2 Answers   CB&I Lummus,

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why the generator efficiency is greator than motor?

4 Answers  

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How much depth n width required for laying of 1X70 Sqmm Cable in Desert???

0 Answers   Alka Electromech, Aramco,

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How to find Cable size? Caterpillar generator produce (Two generators) 127*2=254 amp at 11 kv . What would be the cable size (XLPE) to supply 256 amp at 11 kv? Air or surrounding Temperature is 32 degree C. Cable will go under ground at 2.5 feet depth. Group Rating Factors is 3 cables. Clearance between cables is 7 cm. Soil Temperature (Ambient) 28o C Soil Thermal Resistivity is 1.2 K.m/W I would like to use 3 separate single core instead of using 3 core cable. Some says I should use three separate single core 120RM cables. Some says 70RM .some says 95. I m totally confused. Is there ant specific rule to determine cable size? What would be the LT cable size to flow 500 Amp current? Ifte My e mail address is ifte13@yahoo.com Anyone please send me the answer to my e mail address, i will be very glad.

1 Answers  

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what is the CT of protection and CT of metering ? what is class 5P10 & 5P20 and class PS ?

16 Answers   JEE Main, ONGC, VRA,

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How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?

0 Answers  

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In case of 3Phase Supply, Voltage R-Earth/Neutral - 220 Y-Earth/Neutral - 220 Z-Earth/Neutral - 220 Total is -> 660Volts Then Why it is said that 3Phase supply is 440

6 Answers   Hindustan Unilever Limited,

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Pls anyone explain me the basics of wiring a house?

3 Answers  

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