why transformers not work at d.c.-

3 Answers  

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What is d role of reactive power in power system??How it produce & consume?

5 Answers   ABB,

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How to calculate or testing the KW in generator

1 Answers  

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How to calculate incomer of a capacitor bank/feeder from its KVAR, AND how to calculate the copper busbar for rated incomer,like for 400A we calculate the 40x10 of aluminum busbar.

1 Answers  

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For DG set,if the loading is increased,does flue gas temperature increases or not?

2 Answers   NTPC,

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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?

0 Answers  

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How to design harmonic filter at the project stage without nowing the harmonics levels

0 Answers  

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why excitor coil of an alternator can fail

3 Answers  

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If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?

0 Answers  

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whow we find out dc motor field aur armature resistance

1 Answers  

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why the capacitors works on ac only

5 Answers  

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How do we check transformer losses and what are the ways to minimise it.

5 Answers  

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