plz send me HPCL apptitude paper.. maulik_elect@yahoo.co.in

0 Answers   HPCL,

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I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?

0 Answers  

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we have 3 single phase transformers. how will we generate 6 supply from 3 phase supply input

0 Answers   NHPC,

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what will happen if field winding of Synchronous generators given ac supply

4 Answers  

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what is second harmonic, how is effect transformer ?.

2 Answers   DEWA,

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can we make a electric generator,which can not use any type of fuel,air,solar,gas,thermal,coal,petrol,etc and able to produce electrical energy (or self electricity generating generator)

0 Answers   NTPC,

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The safest value of current which can pass from human body?

4 Answers   Jindal,

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what is purpose of using reactor in substations.

20 Answers   Heavy Engineering Corporation Ltd HECL,

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What is the Harmonics??????????

5 Answers  

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Why do not we prefer non conventional sources of energy to conventional sources?

0 Answers   Nabard,

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why should the lowest unit of a testing transformer ( cascaded transformer ) have higher power rating??

0 Answers   TCS,

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why do we have another cartridge filled with oil fitted at the bottom silica gel cartridge in power transforers

1 Answers  

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