how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets

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what is pressure relief valve in D.G ?state its function?

3 Answers  

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What happens when ac supply is given as excitation voltage instead of dc supply

1 Answers  

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What is I/P converter?

1 Answers   RRDonnelley,

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Whats changes in Transformer Oil BDV in changes in temp or Climate?

2 Answers   TATA,

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what is LUX?

4 Answers   NTPC,

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what is the use of back emf?

1 Answers  

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what happens when series resonance occurs?

0 Answers  

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what are the types of basic earthing?and why we are doing that?

3 Answers   Bharti,

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earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?

0 Answers  

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What is the difference between relays and contactor construction wise?

0 Answers  

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State and define norton’s theorem?

0 Answers  

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