How to check the specific gravity of the two 12 V batteries connected in series to a 24 V UPS and inverter ? will we have to disconnect all the connections and turn off the UPS and inverter or not ? will we have to check specific gravities in each cell of the two batteries ? what is the name of the instrument that is used to check the specific gravity and whats the procedure to check the specific gravity with it ? thanks

2 Answers  

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How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?

0 Answers  

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Define resonant frequency?

0 Answers  

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before synchronizing an alternator,power factor is leading ,why?

0 Answers   CUMI,

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Vibromotor 252MV 1/4HP2P..what is mean by 252MV?

0 Answers  

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can i able to get bhel previous exam question paper?

0 Answers   Bhel,

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can u describe the method used for protection of transmission line.

0 Answers   IBM,

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what is meant by Ac & DC drives where its useful ? how its functioning ?

3 Answers  

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what is neutral grounding? why is it required? what is neutral grounding resistor and how is its value calculated??

11 Answers   NTPC, ONGC,

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Why HT cable have only 3 core ?

10 Answers   Jindal, McDermott,

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For household Load of 11Kw supplying 5Nos. 1.5 ton Air conditioners + usual other load what shall be rating of Either ELCB Or ELMCB? Which of the circuit breaker will be a better choice?

2 Answers  

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what is meant by distance protection ? how distance protection relay function ?

1 Answers   ABB,

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