How the surge voltage can be arrested in electronic devices

1 Answers  

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why Current is lead 90 degree and voltage is lag 90 degree in a capacitor.? why Current is lag 90 degree and voltage is lead 90 degree in an inductor.?

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how to minimize earth resistance upto 2Ω, if the resistance is 6 Ω ?

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is it possible to minimize the copper loss?

2 Answers   Coal India, TATA,

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PID controller details

1 Answers  

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What is float cum boost charging system?

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How to calculated capacitor rating both HT

10 Answers   Reliance,

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my name is venkat .i have good percentage in my academics(ssc 86, intermediate 83 b.tech 73) my question 1..after completion of my ssc i joined in bpc but i didnt got rank in emcet so i completed MPC in one year compartmentally ..so here what am expect question from this background?

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my first school?

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for ac networks if the voltage wave form is V=Vm sinwt here the voltage Vm=230 for the frequency 50hz then the time period is 0.02 sec then for the time period 0.12 sec what is the voltage

4 Answers  

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In power transformer YnD0 Vector Group is possible or not? if possible, what will be the vector diagram and what are the conditions?

2 Answers  

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what is the potential difference between line and earth?

11 Answers  

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