Answer / istiak

in measuring polarities of a transformer we use a very small
battery or dc supply voltage source.in that case,if we use
alternating current replace of D.C then we couldn't find
polarities because ac changes it's side within a few moment
and dc doesn't..................

Answer / k.prakashchandra

To create momentary magnetic field

why a vaccum is created in condenser

13 Answers   Honda,

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what will happen if we give a dc supply to a transformer.?

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How can we checked Killo Watts of Motor & Alternator?

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How i can select current transformer and meters for the upgrading the panal..for 200kw to 600kw....i need to select monitoring and protection ct,s and apmpire meter ,kw meter too.

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why voltage rating not mention at HPSV or HPMV lamps?

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What was your role in the silicon evaluation/product ramp? What tools did you use?

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Is it required to do earthing in 2nd shop if earthed armoured cable is laid from 1st shop ?

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0 Answers  

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what is different between buchhoz relay and pressure relife devices in transformer

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what is ramping rate of generator

0 Answers   Core,

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