Why Ac Systems Are Preferred Over Dc Systems?

0 Answers   ABB,

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In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring

0 Answers  

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what is the importance of fault level in power system and how is it decided

2 Answers  

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Sir if i have 2kv ups in which 17ah 8 battries load 600watts how much back up time i get and if i put 6kv ups with the same no of battries same amp can i get more back up time please give reply exactly what is the procedure to calculate back up time for different kv,s

3 Answers  

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UPS battery Back time = no.of Batteries * Ah of the Battery / output KVA * 130 ? what is the 130 means ? can any one help? because all are using this formula how its came 130?

2 Answers  

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can someone explain that how the speed of the protection system affects the fault level calculation?

0 Answers  

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how does damper winding produces torque in synchronous motor?

1 Answers  

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IR value for 30kw lt motor

1 Answers   Hofincons,

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What will be the fault current of any system when its generation is 10% of BASE generation( FUll Load )?Will is 10% or the same as full base calculation?

0 Answers  

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How much load can give on 1600 kva transformer 11kv/440

5 Answers  

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what is the differences between single phase ind. motor and three phase ind.motor?

3 Answers  

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how to select a cap,when a fan is required 2.5 micro ferad cap,then how we know about 1 hp motor?

1 Answers  

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