Answer / k.prakashchandra

First charge the battery fully i.e. till charging current
becomes almost zero at 130% of rated voltage of the
battery.Then discharge till the terminal voltage becomes
90%.if AH (A xH ) discharge is more than 26 ,then the
battery is good.Do not allow charging or discharge current
exceed 5 A.

what is the formula to find battery back up of ups?

3 Answers  

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Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.

0 Answers   HPCL,

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we are using three transformer 33000/430 vac for three separet block.all three transformer have three LT panel separetly. can be Interconnected all three panel through bus coupler. this is permissable or not by state electricity board.

4 Answers   Piramal Healthcare,

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what is an oscillator?

7 Answers  

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what is pressure relief valve in D.G ?state its function?

3 Answers  

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Give details of your interested designation, the post you are interested to serve the company better and explain why you think you can serve the company better in such position if employed?

0 Answers  

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why we are using the ac supply in domestic purpose why don't use dc supply

6 Answers   Airtel, SSIL,

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how work a harmonics filter(L-C combition).

1 Answers   Bhel,

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diesel generator not getting start so whats problems will happen to DG and how we can start DG

1 Answers   Lodha,

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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............

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Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

0 Answers  

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what is the voltage regulation for unity and zero power factor?

0 Answers  

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