what happen if the battery is charged by more than one source ,for ex: connecting data cable to laptop & charger pin to source supply ? 

2 Answers  

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Is it necessary to seperate the DG earth grid with Electricity Board earth grid for protecting the DG set. if yes why?

2 Answers   BARC,

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Difference between mcband isolator

1 Answers  

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how many units consumed by 8.5 ton ductable split ac in one hour in 3 phase?

2 Answers   Servis,

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How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground. Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?

1 Answers  

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resitance in ac=1.6*resistance in dc

3 Answers  

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what should be distance between phase to phase in 415v system?

1 Answers   NTPC,

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if field current decreases how can the speed increase in the unloaded dc series motor

1 Answers  

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In LRS how much water PH value maintain for good operation of motor?

3 Answers  

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how much up to LT Voltage range?

4 Answers  

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i need list of swg(standard wire guage) or area of conductor v/s current carrying capacity of conductor copper & alluminium...

0 Answers  

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When star connection of motor is use?

1 Answers  

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