Answer / suthan prabhu

Resistance

Answer / dheeraj.yadav

Resistance

I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)

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How to select the cable size for the given load ?Pls explain the Formulae

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can we run a motor rated 50Hz,415vac,1440RPM At higher speed then rated on name plate with the help of VFD /drive on long term basis.wheater it will effect the motor life

3 Answers  

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Define cuttoff frequency?

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why the three phase transformer's star point does not sparks or seperated? while we often see that two phases touches each other it sparks and ocationaly conductor breakes out.

4 Answers  

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why the conservater tank alwes made upper side of transformer???

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why dc is used in control circuits for MV & LV switchgeras instead of ac

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What will the effect on a motor designed at 60 HZ, and operated on 50 HZ ??

8 Answers  

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why the field winding in dc motor is not short circuited eventhough dc supply is applied across the winding

0 Answers   Torrent Pharma,

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ups and invertor battery selection chart and full formula

2 Answers   APC,

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if dc motor can operate by ac supply ? if its possible means how ?

2 Answers  

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what is gas turbine intercooling ?

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