Answer / k.prakashchandra

PT-100 (RTD) measures temperature on the basis of variation
in resistance due to temperature and thermocouple is a
junction between two different metals that produces voltage
related to temperature difference ,for measurement of temp.

how r charge carriers produced

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can we do the star delta connection of capacitor for 3- phase motor starter.

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why motor run slow speed in star connection?explain how?

3 Answers  

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is it possible to minimize the copper loss?

2 Answers   Coal India, TATA,

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It is a three inch fan and i want it to rotate to other direction .I've tried cutting the wire and reconnecting them inverse like black to white and white to black ,but it won't start rotating when i plug it in that way.And then it works again when i rejoin the wire to the way it is. I don't know what causing the problem.Is there anyone familiar with these small mortor?Any suggestion would be appreciated.Thanks!! http://i296.photobucket.com/albums/mm163/sasukebloodwheel/110527-105859.jpg

2 Answers  

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Can anyone please provide me details of MCCB/Contactor/SFU rating calculations for a motor feeder..for example 50 kw.. not from type-2 cordination chart. i want manual calculations..

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can we coorect P.F. OF 320 KVA ALTERNATOR AT LOCAL SITE WITH RATED .8 PF LAGGING.

1 Answers  

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What is the formula to find out cross sectional area of cable for certain current rating?

1 Answers   MRF,

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Transfer of electric power from primary to secondary in a transformer takes place A electrically B magnetically C electro-magnetically D conductively

2 Answers  

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what is a switchgear. what is its work & where it is used?

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Why we does earthing for transformer neutral point

5 Answers   amps, DLF,

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What is the relationship between voltage,current & frequency?

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