what is difference between KW,KVA,KVAR? also give me the formula for all the three...

3 Answers  

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the winding of Gen and Motor is star or in delta ??? and why

1 Answers  

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what voltage generated earth tester meter when we testing the Earth point ?

1 Answers   Cognizant, CTS,

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3 phase =440v single phase = 230v 2 phase =?

8 Answers   Accenture,

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LT, CC and LMU installed at both the outgoing circuits of 132 kv double ckt transmissio what its means ? and what are there use ?

1 Answers  

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Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?

0 Answers   Quest,

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why we use REF and Differential Protection in one transformers?my doubt is both protections are operated in internal fault only.why we want to use 2 protections?please clarify.

7 Answers  

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what are the precuation should be taken ahen installing power transformer,circuit breaker,current & potential transformer

0 Answers   Siemens,

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Why Transformer in KVA?

41 Answers   APCPDCL, Apollo Power, College School Exams Tests, Electrical Tech, Hitech, HP, L&T, MDL, Oil and Gas Jobs, TATA,

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why the air gap is necessary in the transformer core

1 Answers   Eskom,

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what is surge suppressor?

5 Answers   Essar,

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why the efficiency of the dc machine is high ,when it is operated as a generator?

3 Answers  

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