Answer / ali

Hi ,

My 50/60MVA ONAN/ONAF power transformers tripped at 47MW power , but no windding temp alarm or trip , no any other indication, just PRV trip, what is the reason ?

what happens when we give ac supply to the dc motor?and why?

4 Answers  

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What is drain current of static relay?

1 Answers  

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what is MEMS and any one of it applications?

1 Answers  

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what is differant beetween overload current and phase current?

0 Answers   KMJ, Petron ltd,

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in short circuit. test of a transformer 5 to 10% ofvrated voltage is used why??? if we use rated voltafe then what will be?

1 Answers  

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Why in medium voltage system(3.3kv to 33kv, neutral is earthed with either resistance, reactance or neutral grounding resistance?

4 Answers   Essar,

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why 3 phase motors are preferable over single phase motors ?

4 Answers  

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Is there any decided or standard frequency to check the meager testing of transformer, DG set, LT Panel in the industries in a year. I means how many times we should be check the same.

2 Answers  

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What is the reason behind current flow(20 A) in amain earth cable of an SMDB? Is cuurent flow(45A etc) through a neutral cable acceptable?

0 Answers  

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Why hydropower stations are preferred solution for meeting peak loads in grids?

0 Answers  

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WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?

1 Answers  

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define digital electronic

0 Answers  

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