If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?

0 Answers   Nalco, NTPC,

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Witch do depand of Power factor and theory of power factor?

0 Answers  

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one conductor length is L.and i am strech uniformly this conductor and made length is 2L.so resistance of this strech conductor is R=4R..but i want to know about area of stech conductor hows it become a/2..

0 Answers   Infosys, ME,

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xplain in detail d pr. of synchronous motors? why syn. generators r used for the production of electricity?

4 Answers  

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what is the instrument used for measuring insulator RESISTANCE

5 Answers   TATA, Transco,

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sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

0 Answers  

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hi friends this is a newcomer in your community of enthusiastic peoples. i am preparing for SSC (CPWD JUNIOE ENGG EXAM FOR ELECTRICAL) pls guide me on the same how to crack it? PLS LET ME KNOW IS ANYONE THERE WHO PASED IT? CAN I GET THE QUESTION PAPERS OF PREVIOUS EXAMINATIONS?

0 Answers  

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will a transformer work when pulsating dc id applied to its primary?? what will be the result??

2 Answers   cemp,

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What happens on the secondary of a 33kV/11kV when one phase of the primary fuse blows?

3 Answers  

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what is the usage of microcontroller in the panel board?

0 Answers  

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If the supply voltage is same (say 440V) whether a system designed for 60 Hz frequency will work with 50 Hz frequency or not , if so pl. give clarification.

11 Answers   ABB,

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what is the difference between Ith & Iu rating in MCCB. Particularly on SACE ABB Circuit Breaker?

2 Answers   Siemens,

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