Answer / jaadeesh

alternator works in both laging and leading power factor

What is the difference between automatic & semi-automatic star-delta starters?

3 Answers  

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Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?

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Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 Answers  

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Why neutral point is consider as zero potential?

0 Answers   Equate,

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what is meant by k-rating in isolation transformer?what is k9, k14 stands for?

0 Answers  

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What is the important precuations need tocarried out while working with Electrolite in Battery PM?

0 Answers  

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What is the relationship between voltage,current & frequency?

0 Answers  

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What is the differences in phase to phase voltages between star and delta connections of stator?

1 Answers  

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At a family reunion were the following people: one grandfather, one grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law, and one daughter-in-law. But not as many people attended as it sounds. How many were there ?

6 Answers   CTS,

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what is the procedure for three phase motor differential relay testing can it do with single phase test kit?

1 Answers   ABB,

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The ripple frequency in output of fullwave bridge rectifier is a. Half the input b. Twice the input c. Same as input

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Is there any difference of regulation of transformer, alternator , transmission line, if yes, what is it?

1 Answers  

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