Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.

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how to read AWG n how to convert AWG reading into mm?

1 Answers  

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how can check the resistance of battery contact?

0 Answers   Cipla,

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Why is shaft current insulation required on large motors & when should it be checked i.e. before or after assembly?

2 Answers   Aramco,

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2. If 8.35%Z means the percentage impedance of 132/11kV transformer self,will like to reconfirm the percentage impedance that is supplied from power company?

2 Answers  

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what is called inrush current??

1 Answers   KSEB,

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who is ohm's and his law ?

1 Answers  

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In chillers & freezers which gas will be use?

3 Answers  

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now a shunt motor is practically a constant speed motor , then how does it meet the increase or decrease in the load ?

1 Answers  

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I have connected 04nos. earthings to a transformer through 04nos. earthing pits seperately. 02nos. earthings are connected to T/F body, and 02nos. earthings are connected to T/F neutral.T/F capacity is 2000KVA, 11KV/415V. But after completing of 02 years successful operation ,we are facing following problems- 1. CT/PT occured blast one time 2. HT cable box occured blast two times 3. One body earthing strip and one neutral earthing strip of transformer are overlapping at some places. Whenever these two strips are pressed at overlapped points, they made spark. What is the reason of spark? Please explain the reason & rectification of above problems

5 Answers  

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what are the main parts of DG? explian thier functions?

8 Answers   Apollo Power, Tata DoCoMo, Tyco, Vizag Steel,

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Witch do depand of Power factor and theory of power factor?

0 Answers  

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