in ONAN type transformer winding temperature is lower than oil temperature at evening time but morning winding temp is higher than oil temp what is the reason?

2 Answers   Areva,

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I need to calculate the Battery bank back up for below configuration:- UPS - 120 KVA Battery Bank - 200Ah Volt of each cell - 12 V Total No of cell - 34 No's Can you please help me to get the battery back up time for above configuration...? along with formula

1 Answers   Wipro,

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Can we use Motor protection CB while we use the VFD for Speed control?? if not means please tell the reason!!!

1 Answers  

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What do you mean by passive circuit elements and why these are called passive?

0 Answers  

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how much watts are equal to one unit of energy meter?

9 Answers  

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what is relation of rpm with Power supply? rpm directly Proposational to power ?

2 Answers  

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hi friend i am going too attend for hpcl in this month please help me by sending written test question papers i am in the stream of E.E.E

0 Answers   HPCL,

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What is the differance between Digital Energy meter & Static energy meter? why the KWH diferance between both meters.

3 Answers   Raychem RPG,

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how give earthing to shif and aeroplane which is away from earth?

1 Answers   ABC,

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How u can give the overload setting to any motor protection relay for a HT motors with formula and Example?

0 Answers   OCL,

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why all selected supply voltage are multiple of 11

1 Answers   Gamesa, Suzlon,

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what is the prosses for getting of 33kv licence (i have completed my engineering degree & working in 33kv substation for contract basis )????

0 Answers   Surana,

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