How to know the back up time for a 5KVA UPS which is connected to 15 nos. of computers? Is there any formula for this? pls. tell me.

1 Answers   S V Sugar,

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why causes the burnt of AC Electrical Motor ?

9 Answers  

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i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

0 Answers   IOCL,

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A well system is when , no. of bus bar is less or more. Tell me the concept of it.

0 Answers  

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how the frequency was generated in power station

2 Answers  

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what is the function of rccb how it diffrentiate between elcb

1 Answers  

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Write the force balance equation of m ideal mass element.

0 Answers  

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why we use to always generate power below 16kv.why not at higher voltage?

3 Answers  

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What is meant by impedance? difference between high & low impedance ?

0 Answers  

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when it is possible kvrah lead & fundamental kwh be equal in electonic trivector meters (3 ph)

0 Answers  

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If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.

0 Answers  

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why voltage coil in wattmeter called as pressure coil why the pressure term is used in wattmeter?

1 Answers   NPCIL,

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