Answer / prakash

UPS Paralleling means distribution of load between two or
more UPS'. Or you can use one as backup or stand by ups.

While paralleling the UPS, one must check following,

Input Voltage, Neutral to Earth Voltage, Neutral earthing
etc.

Batteries used for electrical energy storage are a. Laclanche cells b. Edison cells c. Lead acid cells d.any of the above

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1. If we apply dc supply to the primary winding of transformer it will be burnt out. similarly dc supply is given to field winding of syn. motor and armature winding of dc motor, they are safe. (Remember both windings inductive nature) what is the reason behind that?

2 Answers  

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What is the source of dependent source ?

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HOW TO CALLICULATE RESITENCE,REACTANCE AND IMPEDENCE VOLTGE OF TRANSFORMER 13.33 KVA 144/240 VOLTS 93/56 A WITH FORMULA

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why u r living from presentaly working.

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I want to know the principle of rotating flux transformer.

1 Answers  

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How to calculate multiplication factor in kva example 500kva ans pls ?

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why phase always came one direction in 5pin socket(right hand or left hand) which direction and why..........?

4 Answers   Alstom, L&T,

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Why the Petrol Guns in the Petrol bunk are earthed?

3 Answers   ITC Infotech,

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What is Nominal voltage?

3 Answers   Bhel, Equate,

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A three phase load, around 4 km away from the 11/0.433KV distribution transformer (Neutral of Transformer is solidily earthed) and consisting of mainly very costly and sensitive electronic equipments is giving trouble due to high voltage difference between neutral and body earth. Whether this problem can addressed by connecting neutral at the load point solidly to earth?

3 Answers  

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What is the restart inhabit setting in ABB spam150c relay (Motor protection relay)

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