What is the basic principal, by which DC voltage level is increased more than the supplied AC voltage during conversion. As upto AC level it is contorrled by firing anlge but after maximum level how is it possible.Please clear picture. OR we have to supply the higher level AC?

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what material is the electrical housing wire made of? is there any difference for the telephone lines?

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what is the function of commutator in dc motor?

52 Answers   Aviation, HP, Raj Construction, TCE, University Exams,

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What are the basic elements used for modeling mechanical rotational system?

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Whats the frequency used in Rodents Repllant System????? What is the Diff btw Infrasonic & Ultrasonic Frquencies???

1 Answers   Emerson,

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What is restricted earth fault protection ?

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what is vibration?

2 Answers  

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how to calculate the cable size in sqmm if load (kw) is given?

5 Answers  

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what happen if i change the polarity of ac when it is connected with motor

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1. what is the power factor of a purely inductive load? 2. Which type of transformer connection is preferred in case of power supply transformers? 3. In power transformer usually which winding is closer to the core? 4. what will happen to the generated emf if the no. of poles of an alternator is increased?

5 Answers  

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Please let me if star point(Nutral) of Delta/ Strar transformer, in 4wire (TPN+E) is tobe gruonded seperatly,inaddition to LV Panel earthing????

1 Answers  

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what is the difference between concentrated winding and Distributed winding in motor?

7 Answers   BSL, Infosys, TCS,

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