how we can calculate which capacity capacitor bank we have to add for improve pf?

3 Answers   Consultancy, JM Huber, Torrent Power,

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how one can know the charging time, discharging time of a 12 VDC battery ? If i have a battery of 12 VDC , 4.0 AH , how long will it take to charge from a charger (power supply) of input 220 V , Output 15 V and output current of 3000 mA and how long will it take to discharge whether using or not ? How much backup will it give ?

1 Answers   ONGC,

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how to find the torque of the single phase synchronous motor by doing an experiment

0 Answers  

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why battery is connected in parallel ?

7 Answers  

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tell me some type of questions throught which i can prepare for exam and do my best

0 Answers   Jindal,

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How can we check ELCB trip current sensitivity How can we check earth resistance value

2 Answers  

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What it the purpose of parallel phasing transfomers??

0 Answers   Asia MotorWorks AMW,

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why we use end termination kit for ht xlpe cables

1 Answers  

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we know that dc motors are more superior then three phase induction motors in torque generation though they are not much used in industries why?

5 Answers   Essar, L&T,

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eddy current losses depends on?(a-max magnetic feild,b-avg magnetic feild,c-on frequency,d-on square of frequency)?

3 Answers   Ecil,

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

0 Answers  

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what is difference between fuse and breaker?

6 Answers   ABB,

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