what happen if we supply ac to the field of a alternator?

5 Answers  

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Do any one know exacatly when the results for NHPC held on 8th march 09 for engineering trainees will be released ?. if so please post it, i'm eager to know it.

0 Answers   NHPC,

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briefly explain principle of resistance welding

0 Answers  

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how many ht 11 kv cable size for 11kv 2000 kva 11kv*433v transformer ?

3 Answers   Megatron Solutions, TCS,

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What is SFU why it is used

1 Answers  

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i am getting to neutral earth voltage zero ,is this a perfect earthing ?

3 Answers  

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what is difference between sub-station and switch yard.

16 Answers   Bhel, Ravate,

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what is surge suppressor?

5 Answers   Essar,

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Dear Friends, I have a 500KVA transformer supplying whole factory having 3 phase and single phase mixed loads. Power room has ammeters connected via CTs for individual phase. Now I know that readings shown on meter for each phase say R,Y and B are line currents. But when I want to know the total on transformer do I need to add the currents of all three phases readings shown on meter or value for anyone phase will give me the correct power load on transformer for that point of time. 2. If ammeter shows unbalanced readings for R,Y, B phases say 150, 250 and 300 respectively so can I assume that 150A i.e average of 3 will be the 3phase load currents and remaining will be 1phase currents. Please clarify my doubt.

4 Answers  

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What is the formula to calculate capacitor bank rating for a certain load.

2 Answers  

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why the value of impedence is taken as %impedence in fault currrent calculation

1 Answers  

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how can we make cable shedule for controll wiring ? which details must be required for it.?

0 Answers   L&T,

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