why we not connect the 12 V batteries in parallel to get the more backup supply for an UPS ? wheter off line or on line UPS ?

2 Answers  

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What happens if we give the supply to the rotor of induction motor and make its terminal shorted?

2 Answers  

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what is power factor?

3 Answers  

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why do we use UPF watt meter in short circuit test of the transformer and LPF watt meter in open circuit test of the transformer

2 Answers   Bell, TCS,

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What is mean by Sensitive Earth fault & what are the effects

1 Answers   Enteg Technologies,

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3phase motor can be used as a Prime mover for alternator.

0 Answers  

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Define open loop control system.

0 Answers  

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What is difference between start imitation and start interlock for 3 phase motor protection ?

0 Answers   Siemens,

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wat s reactive power.... how could it be compensated.....

4 Answers   TCS,

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What is difference between safe PLC and normal PLC

0 Answers  

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Explain working of servo controlled voltage stabilizer.

3 Answers  

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What is disadvanage if power factor goes to in leading..?

0 Answers  

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