Answer / sagar upadhyay

Switched mode Power Supply. It is used in modern electronic
devices like CFL, PC power supply etc.

Answer / bharathi

SMPS converts the unregulated ac or dc voltage to the
regulated dc voltage using the rectifier.In the output of
the rectifier there is a filter to filter the voltage and it
can be send to the high frequency dc-dc converter.

What is the formula to calculate the size of Aluminium and copper cable?

0 Answers  

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what is meant by impedence? can you describe easy becuse iam not well familier in electrical?

2 Answers  

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how open delta PT works & what is its construction?

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how many test is necessary for 27mva transformer.

3 Answers   HEG,

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how can we change the supply voltage?

4 Answers   Areva,

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

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Dear Friends, Need your help for connecting APFC panel, Quotation : I have 2 No’s 1000 KVA Transformers, both transformers are having separate APFC panels, ( Tr-1,400KVAR, TR-2,450 KVAR) Now I want to stop One transformer, present load is 650Amps, Max, So One transformer is enough, I have switched OFF TR-1, but PF is not maintaining properly, its 0.5, So now I want to connect TR-2 APFC also in TR-1 Loads, Can any one answer for my Quotation with drawing, how to connect TR-2 APFC panel in TR-1 Loads,

4 Answers   L&T,

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How does a system control centre in a utility plant gets the grid frequency of the electrical network (50 Hz or 60 Hz)by the SCADA system?

1 Answers  

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Why in metering Ct for ammeters ct secondary side is grounded for each Ct but not in case of CBCT (Core balance current transformer)..kindly some1 highlights the reason..is it because net flux is zero?

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why voltage drop if we have connected 230 v ac suplly through diode to bulbe we found haft ie 110 voltage drop why it is

4 Answers  

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how can get electrical c licence.now i am working in spining mill , transformer capacity 2750KVA. SANCTION DEMAND 2250KVA. PLEASE ADVISE ME . MY CONTACT NO 09944226823

0 Answers  

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what is ground fault current? is there any current flow takes place through ground? is it possible? if it's possible whether it affect human beings on earth near the fault or not?

2 Answers  

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