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   HAL,

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Define newton's law of viscosity.

0 Answers   Godrej,

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Why field rheostat is kept in minimum position while armature rheostat at maximum position?

0 Answers  

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A 400KVA transformer has 400 Hz frequency. If the frequency is changed to 50 Hz, then what will be the new KVA rating?

0 Answers   Spectrum,

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Explain the working of variable frequency transformer?

0 Answers  

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why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

0 Answers  

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Explain what is Zener diode?

1 Answers  

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technical questions asked by visa steel interview plg get me!

1 Answers   LG, Visa Steel,

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how to calculate insulation level of transformer?

0 Answers  

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What different between kw and kva. why maser AC in kva.

3 Answers  

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what is NGR in generator?

4 Answers  

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IT IS SAID THAT THE OLTC OPERATION SHOULD NOT BE PERFORMED WHEN THE TRANSFORMER IS GENERATION TRANSFOREMR/STEP UP MODE. WHY IS IT SO?

1 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

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