Answer / karthik

copper losses depends on current and core loss depends on
voltage. either of losses dont depends on powerfactor. This
is the reason why transformer rating is always in kva not kw.

Answer / dheeraj dubey

AT THE TIME OF MANUFACTURING WE DONT KNOW THAT WHAT TYPE OF LOAD WE ARE GOING TO APPLY. IT MAY BE INDUCTIVE, RESISTIVE OR CAPACITIVE

How to calcualte the total number of cells required for particular UPS of some X KVA with 3 and 5 hours back-up?

1 Answers   JLL,

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single phase can run in PVC conduit. Three phase can also run in one PVC conduit. But two phase cannot run in one PVC conduit. WHY? reply plz....awaiting your answer.

8 Answers   L&T,

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if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.

0 Answers   Power Plant,

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my self i am raghu working as tech.. in my college the maximum demand is 211 kva presently we are using 12kva capacitors the target power factor is .95 so what capacity of capacitor banks should i install

2 Answers  

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why are the a.c.series motors preferred for electric traction

4 Answers  

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why effective resistance should be more than static resistance in transmission line?

0 Answers  

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1.differance between onload ups and off line ups.

1 Answers   CTS,

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what is difference between fuse and circuit breaker?

4 Answers  

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why earth fault current is always less than the o/c

2 Answers  

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If ct ratio is 250/1 and mtr is of 5 amp, what will be mf?

1 Answers  

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iam preparing for rrb section engineer post in electrical branch.suggest the right textbook for my reference.fromwhere i will get the previous q.papers?

0 Answers   RRB,

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Transformer's core is made up of which material and why so?

10 Answers   ABB, NTPC,

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