what are the main parts of UPS what is the function of that?

23 Answers   Apollo, HCL, Liebert, Royal Furnishers, Tech Mahindra,

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why dc series moter is not started at no load?

5 Answers   IOCL,

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Why does the radius of armature is less than the radius of pole shoe?

0 Answers   ABB,

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what is the difference between earthed system and unearthed system.. where do we use unearthed system because in electrical catalogues always cable for earthed and unearthed system is given..pls elaborate

3 Answers  

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What are the condition for parallel operation of transformers?

2 Answers   Alfanar,

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HOW TO CALCULATE THE CAPACITOR RANGE FOR LOAD FOR PF IMPROVEMENT? EXPLE:FOR 65 HP LOAD HOW TO CALCULATE CAPACITOR RANGE?

12 Answers   Al-Malik, All Star Electric, GEC, Reliance, Universal Industries,

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How to operate a ac chilar plant?

0 Answers  

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What is the test block protection relay if any body know plz explained

0 Answers  

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circuit diagram of ht panel

0 Answers  

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why ferranti efect occurs on no load only?

3 Answers  

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We in my plant one of the transformer showing neutral to earth voltage is 22V how to solve it

3 Answers  

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In all the generators, the excitation supply is DC. What is the significance of DC excitation? What will happen if AC supply is given as excitation supply?

2 Answers  

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